1 files changed, 1 insertions, 1 deletions
diff --git a/Clock.c b/Clock.c
index 5adbad4..9e3bf48 100644
--- a/Clock.c
+++ b/Clock.c
@@ -1248,7 +1248,7 @@ Redisplay(Widget gw, XEvent *event, Region region)
 #endif
 	w->clock.prev_time_string[0] = '\0';
     }
-    clock_tic((XtPointer)w, (XtIntervalId)0);
+    clock_tic((XtPointer)w, (XtIntervalId *)NULL);
 }
 
 /* ARGSUSED */