diff --git a/cde/programs/dtwm/WmHelp.c b/cde/programs/dtwm/WmHelp.c
index f84defb83..198c55b01 100644
--- a/cde/programs/dtwm/WmHelp.c
+++ b/cde/programs/dtwm/WmHelp.c
@@ -640,7 +640,7 @@ static void WmDtCloseHelpCB (
     pTemp = pSD->cachedHelp;
 
     /* Search our Cache List for the closed help dialog */
-    while ((pTemp->helpDialog != helpDialog) && (pTemp != NULL))
+    while (pTemp && (pTemp->helpDialog != helpDialog))
     {
 	pTemp = pTemp->pNext;
     }