diff --git a/phpBB/includes/acp/auth.php b/phpBB/includes/acp/auth.php
index ce6a08bf0b..4dfa617caf 100644
--- a/phpBB/includes/acp/auth.php
+++ b/phpBB/includes/acp/auth.php
@@ -969,10 +969,19 @@ class auth_admin extends auth
 		if ($permission_type !== false)
 		{
 			// Get permission type
-			$sql = 'SELECT auth_option, auth_option_id
-				FROM ' . ACL_OPTIONS_TABLE . "
-				WHERE auth_option LIKE '" . $db->sql_escape(str_replace('_', "\_", $permission_type)) . "%'";
-			$sql .= ($db->sql_layer == 'mssql' || $db->sql_layer == 'mssql_odbc') ? " ESCAPE '\\'" : '';
+			if ($db->sql_layer == 'sqlite')
+			{
+				$sql = 'SELECT auth_option, auth_option_id
+					FROM ' . ACL_OPTIONS_TABLE . "
+					WHERE auth_option LIKE '" . $db->sql_escape($permission_type) . "%'";
+			}
+			else
+			{
+				$sql = 'SELECT auth_option, auth_option_id
+					FROM ' . ACL_OPTIONS_TABLE . "
+					WHERE auth_option LIKE '" . $db->sql_escape(str_replace('_', "\_", $permission_type)) . "%'";
+				$sql .= ($db->sql_layer == 'mssql' || $db->sql_layer == 'mssql_odbc') ? " ESCAPE '\\'" : '';
+			}
 
 			$result = $db->sql_query($sql);
 
diff --git a/phpBB/includes/auth.php b/phpBB/includes/auth.php
index 3d508a23ce..de1b669eba 100644
--- a/phpBB/includes/auth.php
+++ b/phpBB/includes/auth.php
@@ -842,7 +842,7 @@ class auth
 		{
 			if (strpos($auth_options, '%') !== false)
 			{
-				if (strpos($auth_options, '_') !== false)
+				if (strpos($auth_options, '_') !== false && $db->sql_layer !== 'sqlite')
 				{
 					$sql_opts = "AND $key LIKE '" . $db->sql_escape(str_replace('_', "\_", $auth_options)) . "'";
 					$sql_opts .= ($db->sql_layer == 'mssql' || $db->sql_layer == 'mssql_odbc') ? " ESCAPE '\\' " : '';
@@ -881,7 +881,7 @@ class auth
 				{
 					if (strpos($option, '%') !== false)
 					{
-						if (strpos($option, '_') !== false)
+						if (strpos($option, '_') !== false && $db->sql_layer !== 'sqlite')
 						{
 							$_sql = $key . " LIKE '" . $db->sql_escape(str_replace('_', "\_", $option)) . "'";
 							$_sql .= ($db->sql_layer == 'mssql' || $db->sql_layer == 'mssql_odbc') ? " ESCAPE '\\'" : '';