diff --git a/phpBB/adm/style/acp_permissions.html b/phpBB/adm/style/acp_permissions.html
index b4386d5f19..63583093b0 100644
--- a/phpBB/adm/style/acp_permissions.html
+++ b/phpBB/adm/style/acp_permissions.html
@@ -3,7 +3,7 @@
 <a name="maincontent"></a>
 
 <!-- IF S_INTRO -->
-	
+
 	<h1>{L_ACP_PERMISSIONS}</h1>
 
 	{L_ACP_PERMISSIONS_EXPLAIN}
@@ -12,10 +12,12 @@
 
 <!-- IF S_SELECT_VICTIM -->
 
+	<!-- IF U_BACK --><a href="{U_BACK}" style="float: {S_CONTENT_FLOW_END};">&laquo; {L_BACK}</a><!-- ENDIF -->
+
 	<h1>{L_TITLE}</h1>
 
 	<p>{L_EXPLAIN}</p>
-	
+
 	<!-- IF S_FORUM_NAMES -->
 		<p><strong>{L_FORUMS}:</strong> {FORUM_NAMES}</p>
 	<!-- ENDIF -->
@@ -62,7 +64,7 @@
 
 			</fieldset>
 			</form>
-			
+
 		<!-- ENDIF -->
 
 	<!-- ELSEIF S_SELECT_USER and S_CAN_SELECT_USER -->
@@ -123,7 +125,7 @@
 				<!-- IF S_ALLOW_ALL_SELECT --><dd class="full" style="text-align: right;"><label><input type="checkbox" class="radio" name="all_users" value="1" /> {L_ALL_USERS}</label></dd><!-- ENDIF -->
 			</dl>
 			</fieldset>
-			
+
 			<fieldset class="quick">
 				{S_HIDDEN_FIELDS}
 				{S_FORM_TOKEN}
@@ -154,7 +156,7 @@
 		</div>
 
 		<div style="float: {S_CONTENT_FLOW_END}; width: 48%">
-			
+
 		<!-- IF S_CAN_SELECT_GROUP -->
 
 			<h1>{L_USERGROUPS}</h1>
@@ -168,7 +170,7 @@
 				<!-- IF S_ALLOW_ALL_SELECT --><dd class="full" style="text-align: right;"><label><input type="checkbox" class="radio" name="all_groups" value="1" /> {L_ALL_GROUPS}</label></dd><!-- ENDIF -->
 			</dl>
 			</fieldset>
-			
+
 			<fieldset class="quick">
 				{S_HIDDEN_FIELDS}
 				{S_FORM_TOKEN}
@@ -177,7 +179,7 @@
 			</form>
 
 			<form id="add_groups" method="post" action="{U_ACTION}">
-			
+
 			<fieldset>
 				<legend>{L_ADD_GROUPS}</legend>
 			<dl>
@@ -199,7 +201,7 @@
 	<!-- ELSEIF S_SELECT_USERGROUP_VIEW -->
 
 		<div style="float: {S_CONTENT_FLOW_BEGIN}; width: 48%;">
-		
+
 			<h1>{L_USERS}</h1>
 
 			<form id="users" method="post" action="{U_ACTION}">
@@ -210,7 +212,7 @@
 				<dd class="full"><select style="width: 100%;" name="user_id[]" multiple="multiple" size="5">{S_DEFINED_USER_OPTIONS}</select></dd>
 			</dl>
 			</fieldset>
-			
+
 			<fieldset class="quick">
 				{S_HIDDEN_FIELDS}
 				{S_FORM_TOKEN}
@@ -240,7 +242,7 @@
 		</div>
 
 		<div style="float: {S_CONTENT_FLOW_END}; width: 48%">
-			
+
 			<h1>{L_USERGROUPS}</h1>
 
 			<form id="groups" method="post" action="{U_ACTION}">
@@ -251,7 +253,7 @@
 				<dd class="full"><select style="width: 100%;" name="group_id[]" multiple="multiple" size="5">{S_DEFINED_GROUP_OPTIONS}</select></dd>
 			</dl>
 			</fieldset>
-			
+
 			<fieldset class="quick">
 				{S_HIDDEN_FIELDS}
 				{S_FORM_TOKEN}
@@ -311,11 +313,11 @@
 
 	<!-- IF S_PERMISSION_DROPDOWN -->
 		<form id="pselect" method="post" action="{U_ACTION}">
-	
+
 		<fieldset class="quick" style="float: {S_CONTENT_FLOW_BEGIN};">
 			{S_HIDDEN_FIELDS}
 			{S_FORM_TOKEN}
-			{L_SELECT_TYPE}: <select name="type">{S_PERMISSION_DROPDOWN}</select> 
+			{L_SELECT_TYPE}: <select name="type">{S_PERMISSION_DROPDOWN}</select>
 
 			<input class="button2" type="submit" name="submit" value="{L_GO}" />
 		</fieldset>
@@ -347,7 +349,7 @@
 	</fieldset>
 
 	<br /><br />
-	
+
 	</form>
 
 <!-- ENDIF -->
diff --git a/phpBB/includes/acp/acp_permissions.php b/phpBB/includes/acp/acp_permissions.php
index 0e0f1388cd..dcf524d64c 100644
--- a/phpBB/includes/acp/acp_permissions.php
+++ b/phpBB/includes/acp/acp_permissions.php
@@ -762,7 +762,7 @@ class acp_permissions
 
 		$this->log_action($mode, 'add', $permission_type, $ug_type, $ug_ids, $forum_ids);
 
-		trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action));
+		trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action . '&amp;forum_id[]=' . implode('&amp;forum_id[]=', $forum_ids)));
 	}
 
 	/**
@@ -829,7 +829,7 @@ class acp_permissions
 
 		$this->log_action($mode, 'del', $permission_type, $ug_type, (($ug_type == 'user') ? $user_id : $group_id), (sizeof($forum_id) ? $forum_id : array(0 => 0)));
 
-		trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action));
+		trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action . '&amp;forum_id[]=' . implode('&amp;forum_id[]=', $forum_id)));
 	}
 
 	/**