diff --git a/phpgwapi/inc/common_functions.inc.php b/phpgwapi/inc/common_functions.inc.php
index 8e3d6265a0..e12593c7eb 100755
--- a/phpgwapi/inc/common_functions.inc.php
+++ b/phpgwapi/inc/common_functions.inc.php
@@ -1239,11 +1239,12 @@ function function_backtrace($remove=0)
 	{
 		$backtrace = debug_backtrace();
 		//echo "function_backtrace($remove)<pre>".print_r($backtrace,True)."</pre>\n";
-		foreach($backtrace as $level)
+		foreach($backtrace as $n => $level)
 		{
 			if ($remove-- < 0)
 			{
 				$ret[] = (isset($level['class'])?$level['class'].$level['type']:'').$level['function'].
+					($n > 0 ? '('.$backtrace[$n-1]['line'].')' : '').	// add line number of call
 					(!$level['class'] && !is_object($level['args'][0]) && $level['function'] != 'unserialize' ?
 					'('.substr(str_replace(EGW_SERVER_ROOT,'',(string)$level['args'][0]),0,64).')' : '');
 			}