Index: branches/5.2.x/core/kernel/session/session.php
===================================================================
--- branches/5.2.x/core/kernel/session/session.php
+++ branches/5.2.x/core/kernel/session/session.php
@@ -702,7 +702,7 @@
 
 	function NeedQueryString($use_cache = 1)
 	{
-		if ($this->CachedNeedQueryString != null && $use_cache) {
+		if ( $this->CachedNeedQueryString !== null && $use_cache ) {
 			return $this->CachedNeedQueryString;
 		}
 
@@ -1127,4 +1127,4 @@
 		return $ret;
 	}
 
-}
\ No newline at end of file
+}