diff --git a/phpBB/adm/style/colour_swatch.html b/phpBB/adm/style/colour_swatch.html
index b8620a73db..81e3bd9af6 100644
--- a/phpBB/adm/style/colour_swatch.html
+++ b/phpBB/adm/style/colour_swatch.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <title>{L_COLOUR_SWATCH}</title>
 
 <style type="text/css">
diff --git a/phpBB/adm/style/install_header.html b/phpBB/adm/style/install_header.html
index 8d597d868c..58bbd68673 100644
--- a/phpBB/adm/style/install_header.html
+++ b/phpBB/adm/style/install_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <!-- IF META -->{META}<!-- ENDIF -->
 <title>{PAGE_TITLE}</title>
 
diff --git a/phpBB/adm/style/install_update_diff.html b/phpBB/adm/style/install_update_diff.html
index d736fad969..2f38aa1ed4 100644
--- a/phpBB/adm/style/install_update_diff.html
+++ b/phpBB/adm/style/install_update_diff.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <!-- IF META -->{META}<!-- ENDIF -->
 <title>{PAGE_TITLE}</title>
 
diff --git a/phpBB/adm/style/overall_header.html b/phpBB/adm/style/overall_header.html
index 549af462fa..d6d4717537 100644
--- a/phpBB/adm/style/overall_header.html
+++ b/phpBB/adm/style/overall_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <!-- IF META -->{META}<!-- ENDIF -->
 <title>{PAGE_TITLE}</title>
 
diff --git a/phpBB/adm/style/simple_header.html b/phpBB/adm/style/simple_header.html
index 8b6423d7eb..166d02b0c1 100644
--- a/phpBB/adm/style/simple_header.html
+++ b/phpBB/adm/style/simple_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <!-- IF META -->{META}<!-- ENDIF -->
 <title>{PAGE_TITLE}</title>
 
diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index b74d06ec4c..50c80dd33f 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/docs/FAQ.html b/phpBB/docs/FAQ.html
index 654bcfc4f9..69c7a64e2c 100644
--- a/phpBB/docs/FAQ.html
+++ b/phpBB/docs/FAQ.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/docs/INSTALL.html b/phpBB/docs/INSTALL.html
index cdf969ee24..9c5cc611e1 100644
--- a/phpBB/docs/INSTALL.html
+++ b/phpBB/docs/INSTALL.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/docs/README.html b/phpBB/docs/README.html
index 552af6c479..265226f67f 100644
--- a/phpBB/docs/README.html
+++ b/phpBB/docs/README.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/docs/auth_api.html b/phpBB/docs/auth_api.html
index 94ebde4080..c40b33a85c 100644
--- a/phpBB/docs/auth_api.html
+++ b/phpBB/docs/auth_api.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/docs/coding-guidelines.html b/phpBB/docs/coding-guidelines.html
index 64707010ab..b27a0f46c4 100644
--- a/phpBB/docs/coding-guidelines.html
+++ b/phpBB/docs/coding-guidelines.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/docs/hook_system.html b/phpBB/docs/hook_system.html
index 5cce659a82..db190bf965 100644
--- a/phpBB/docs/hook_system.html
+++ b/phpBB/docs/hook_system.html
@@ -2,8 +2,6 @@
 <html dir="ltr" lang="en">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="copyright" content="phpBB Group" />
diff --git a/phpBB/includes/db/dbal.php b/phpBB/includes/db/dbal.php
index 2468f26d39..a61dc5f58a 100644
--- a/phpBB/includes/db/dbal.php
+++ b/phpBB/includes/db/dbal.php
@@ -771,8 +771,6 @@ class dbal
 					<html dir="ltr">
 					<head>
 						<meta charset="utf-8">
-						<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-						<meta http-equiv="imagetoolbar" content="no" />
 						<title>SQL Report</title>
 						<link href="' . $phpbb_root_path . 'adm/style/admin.css" rel="stylesheet" type="text/css" media="screen" />
 					</head>
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 70cf78e75e..7ff32d3071 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2252,7 +2252,6 @@ function redirect($url, $return = false, $disable_cd_check = false)
 		echo '<html dir="' . $user->lang['DIRECTION'] . '" lang="' . $user->lang['USER_LANG'] . '">';
 		echo '<head>';
 		echo '<meta charset="utf-8">';
-		echo '<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">';
 		echo '<meta http-equiv="refresh" content="0; url=' . str_replace('&', '&amp;', $url) . '" />';
 		echo '<title>' . $user->lang['REDIRECT'] . '</title>';
 		echo '</head>';
@@ -3761,7 +3760,6 @@ function msg_handler($errno, $msg_text, $errfile, $errline)
 			echo '<html dir="ltr">';
 			echo '<head>';
 			echo '<meta charset="utf-8">';
-			echo '<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">';
 			echo '<title>' . $msg_title . '</title>';
 			echo '<style type="text/css">' . "\n" . '/* <![CDATA[ */' . "\n";
 			echo '* { margin: 0; padding: 0; } html { font-size: 100%; height: 100%; margin-bottom: 1px; background-color: #E4EDF0; } body { font-family: "Lucida Grande", Verdana, Helvetica, Arial, sans-serif; color: #536482; background: #E4EDF0; font-size: 62.5%; margin: 0; } ';
diff --git a/phpBB/includes/functions_download.php b/phpBB/includes/functions_download.php
index 30544a5bce..91a09608c7 100644
--- a/phpBB/includes/functions_download.php
+++ b/phpBB/includes/functions_download.php
@@ -104,7 +104,6 @@ function wrap_img_in_html($src, $title)
 	echo '<html>';
 	echo '<head>';
 	echo '<meta charset="utf-8">';
-	echo '<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">';
 	echo '<title>' . $title . '</title>';
 	echo '</head>';
 	echo '<body>';
diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index 09e2417efa..b8fe493ab8 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -210,8 +210,6 @@ if ($has_global && !$ga_forum_id)
 	<head>
 
 	<meta charset="utf-8">
-	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-	<meta http-equiv="imagetoolbar" content="no" />
 
 	<title><?php echo $lang['UPDATING_TO_LATEST_STABLE']; ?></title>
 
@@ -262,8 +260,6 @@ header('Content-type: text/html; charset=UTF-8');
 <html dir="<?php echo $lang['DIRECTION']; ?>" lang="<?php echo $lang['USER_LANG']; ?>">
 <head>
 <meta charset="utf-8">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 
 <title><?php echo $lang['UPDATING_TO_LATEST_STABLE']; ?></title>
 
diff --git a/phpBB/install/index.php b/phpBB/install/index.php
index 2cbe9212c0..d8a953fd28 100644
--- a/phpBB/install/index.php
+++ b/phpBB/install/index.php
@@ -558,7 +558,6 @@ class module
 		echo '<html dir="ltr">';
 		echo '<head>';
 		echo '<meta charset="utf-8">';
-		echo '<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">';
 		echo '<title>' . $lang['INST_ERR_FATAL'] . '</title>';
 		echo '<link href="../adm/style/admin.css" rel="stylesheet" type="text/css" media="screen" />';
 		echo '</head>';
diff --git a/phpBB/styles/prosilver/template/overall_header.html b/phpBB/styles/prosilver/template/overall_header.html
index ef9e9549ef..35901c3951 100644
--- a/phpBB/styles/prosilver/template/overall_header.html
+++ b/phpBB/styles/prosilver/template/overall_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="keywords" content="" />
diff --git a/phpBB/styles/prosilver/template/simple_header.html b/phpBB/styles/prosilver/template/simple_header.html
index be3c5239e9..d7807876df 100644
--- a/phpBB/styles/prosilver/template/simple_header.html
+++ b/phpBB/styles/prosilver/template/simple_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="keywords" content="" />
diff --git a/phpBB/styles/prosilver/template/ucp_pm_viewmessage_print.html b/phpBB/styles/prosilver/template/ucp_pm_viewmessage_print.html
index 158c4702da..7ad8632e8a 100644
--- a/phpBB/styles/prosilver/template/ucp_pm_viewmessage_print.html
+++ b/phpBB/styles/prosilver/template/ucp_pm_viewmessage_print.html
@@ -2,7 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 <title>{SITENAME} :: {PAGE_TITLE}</title>
 
 <style type="text/css">
diff --git a/phpBB/styles/prosilver/template/viewtopic_print.html b/phpBB/styles/prosilver/template/viewtopic_print.html
index d902ff0fc1..cc3e67e656 100644
--- a/phpBB/styles/prosilver/template/viewtopic_print.html
+++ b/phpBB/styles/prosilver/template/viewtopic_print.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="keywords" content="" />
diff --git a/phpBB/styles/subsilver2/template/overall_header.html b/phpBB/styles/subsilver2/template/overall_header.html
index df36d86b8d..f1881b1310 100644
--- a/phpBB/styles/subsilver2/template/overall_header.html
+++ b/phpBB/styles/subsilver2/template/overall_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="keywords" content="" />
diff --git a/phpBB/styles/subsilver2/template/simple_header.html b/phpBB/styles/subsilver2/template/simple_header.html
index f3ca0b35ed..f8881fa9a0 100644
--- a/phpBB/styles/subsilver2/template/simple_header.html
+++ b/phpBB/styles/subsilver2/template/simple_header.html
@@ -2,8 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-<meta http-equiv="imagetoolbar" content="no" />
 <meta name="resource-type" content="document" />
 <meta name="distribution" content="global" />
 <meta name="keywords" content="" />
diff --git a/phpBB/styles/subsilver2/template/ucp_pm_viewmessage_print.html b/phpBB/styles/subsilver2/template/ucp_pm_viewmessage_print.html
index 20d1edd249..c1faeb2460 100644
--- a/phpBB/styles/subsilver2/template/ucp_pm_viewmessage_print.html
+++ b/phpBB/styles/subsilver2/template/ucp_pm_viewmessage_print.html
@@ -2,7 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 <title>{SITENAME} :: {PAGE_TITLE}</title>
 
 <style type="text/css">
diff --git a/phpBB/styles/subsilver2/template/viewtopic_print.html b/phpBB/styles/subsilver2/template/viewtopic_print.html
index 8c27d613fa..0deae2427a 100644
--- a/phpBB/styles/subsilver2/template/viewtopic_print.html
+++ b/phpBB/styles/subsilver2/template/viewtopic_print.html
@@ -2,7 +2,6 @@
 <html dir="{S_CONTENT_DIRECTION}" lang="{S_USER_LANG}">
 <head>
 <meta charset="{S_CONTENT_ENCODING}">
-<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 <title>{SITENAME} :: {PAGE_TITLE}</title>
 
 <style type="text/css">
