diff --git a/phpBB/styles/prosilver/template/overall_header.html b/phpBB/styles/prosilver/template/overall_header.html
index 33d2441035..e7c3ac753b 100644
--- a/phpBB/styles/prosilver/template/overall_header.html
+++ b/phpBB/styles/prosilver/template/overall_header.html
@@ -46,7 +46,7 @@
 <!-- ENDIF -->
 <link href="{T_STYLESHEET_LINK}" rel="stylesheet">
 <link href="{T_STYLESHEET_LANG_LINK}" rel="stylesheet">
-<link href="{T_THEME_PATH}/responsive.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" media="all and (max-width: 700px), all and (max-device-width: 700px)" />
+<link href="{T_THEME_PATH}/responsive.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" media="all and (max-width: 700px)" />
 
 <!-- IF S_CONTENT_DIRECTION eq 'rtl' -->
 	<link href="{T_THEME_PATH}/bidi.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet">
diff --git a/phpBB/styles/prosilver/template/simple_header.html b/phpBB/styles/prosilver/template/simple_header.html
index b7669d8bf0..2653f9969d 100644
--- a/phpBB/styles/prosilver/template/simple_header.html
+++ b/phpBB/styles/prosilver/template/simple_header.html
@@ -24,7 +24,7 @@
 <!-- ENDIF -->
 <link href="{T_STYLESHEET_LINK}" rel="stylesheet">
 <link href="{T_STYLESHEET_LANG_LINK}" rel="stylesheet">
-<link href="{T_THEME_PATH}/responsive.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" media="only screen and (max-width: 700px), only screen and (max-device-width: 700px)">
+<link href="{T_THEME_PATH}/responsive.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" media="all and (max-width: 700px)">
 
 <!-- IF S_CONTENT_DIRECTION eq 'rtl' -->
 	<link href="{T_THEME_PATH}/bidi.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet">