diff --git a/phpgwapi/inc/class.datetime.inc.php b/phpgwapi/inc/class.datetime.inc.php
index 6555c67290..cd00123475 100755
--- a/phpgwapi/inc/class.datetime.inc.php
+++ b/phpgwapi/inc/class.datetime.inc.php
@@ -116,7 +116,7 @@
 			}
 			else
 			{
-				return (int)($server_time - $this->gmtnow / 3600);
+				return (int)(($server_time - $this->gmtnow) / 3600);
 			}
 		}