diff --git a/phpBB/adm/style/acp_ext_delete_data.html b/phpBB/adm/style/acp_ext_delete_data.html
index 5ef8ed3d28..cc9ad4e416 100644
--- a/phpBB/adm/style/acp_ext_delete_data.html
+++ b/phpBB/adm/style/acp_ext_delete_data.html
@@ -15,7 +15,7 @@
 		</div>
 	{% elseif PRE %}
 		<div class="errorbox">
-			<p>{{ lang('CONFIRM_MESSAGE') }}</p>
+			<p>{{ CONFIRM_MESSAGE }}</p>
 		</div>
 
 		<form id="acp_extensions" method="post" action="{{ U_PURGE }}">
diff --git a/phpBB/adm/style/acp_ext_disable.html b/phpBB/adm/style/acp_ext_disable.html
index 64d1edbbc3..066795007b 100644
--- a/phpBB/adm/style/acp_ext_disable.html
+++ b/phpBB/adm/style/acp_ext_disable.html
@@ -10,7 +10,7 @@
 	{% if PRE %}
 		<fieldset>
 			<h2>{{ lang('CONFIRM') }}</h2>
-			<p>{{ lang('CONFIRM_MESSAGE') }}</p>
+			<p>{{ CONFIRM_MESSAGE }}</p>
 		</fieldset>
 
 		<form id="acp_extensions" method="post" action="{{ U_DISABLE }}">
diff --git a/phpBB/adm/style/acp_ext_enable.html b/phpBB/adm/style/acp_ext_enable.html
index 23ca22a8c6..4a2ceaadc4 100644
--- a/phpBB/adm/style/acp_ext_enable.html
+++ b/phpBB/adm/style/acp_ext_enable.html
@@ -16,7 +16,7 @@
 	{% elseif PRE %}
 		<fieldset>
 			<h2>{{ lang('CONFIRM') }}</h2>
-			<p>{{ lang('CONFIRM_MESSAGE') }}</p>
+			<p>{{ CONFIRM_MESSAGE }}</p>
 		</fieldset>
 
 		<form id="acp_extensions" method="post" action="{{ U_ENABLE }}">
diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index 98db47886a..d7c6ca5921 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -184,7 +184,7 @@ class acp_extensions
 
 				$this->template->assign_vars(array(
 					'PRE'				=> true,
-					'L_CONFIRM_MESSAGE'	=> $this->user->lang('EXTENSION_ENABLE_CONFIRM', $md_manager->get_metadata('display-name')),
+					'CONFIRM_MESSAGE'	=> $this->user->lang('EXTENSION_ENABLE_CONFIRM', $md_manager->get_metadata('display-name')),
 					'U_ENABLE'			=> $this->u_action . '&amp;action=enable&amp;ext_name=' . urlencode($ext_name) . '&amp;hash=' . generate_link_hash('enable.' . $ext_name),
 				));
 			break;
@@ -249,7 +249,7 @@ class acp_extensions
 
 				$this->template->assign_vars(array(
 					'PRE'				=> true,
-					'L_CONFIRM_MESSAGE'	=> $this->user->lang('EXTENSION_DISABLE_CONFIRM', $md_manager->get_metadata('display-name')),
+					'CONFIRM_MESSAGE'	=> $this->user->lang('EXTENSION_DISABLE_CONFIRM', $md_manager->get_metadata('display-name')),
 					'U_DISABLE'			=> $this->u_action . '&amp;action=disable&amp;ext_name=' . urlencode($ext_name) . '&amp;hash=' . generate_link_hash('disable.' . $ext_name),
 				));
 			break;
@@ -288,7 +288,7 @@ class acp_extensions
 
 				$this->template->assign_vars(array(
 					'PRE'				=> true,
-					'L_CONFIRM_MESSAGE'	=> $this->user->lang('EXTENSION_DELETE_DATA_CONFIRM', $md_manager->get_metadata('display-name')),
+					'CONFIRM_MESSAGE'	=> $this->user->lang('EXTENSION_DELETE_DATA_CONFIRM', $md_manager->get_metadata('display-name')),
 					'U_PURGE'			=> $this->u_action . '&amp;action=delete_data&amp;ext_name=' . urlencode($ext_name) . '&amp;hash=' . generate_link_hash('delete_data.' . $ext_name),
 				));
 			break;