diff --git a/src/gui_motif.c b/src/gui_motif.c
index 1a7e038..397ab59 100644
--- a/src/gui_motif.c
+++ b/src/gui_motif.c
@@ -2023,7 +2023,7 @@
 
 		    XmProcessTraversal(w, XmTRAVERSE_CURRENT);
 
-		    memset((char *) &keyEvent, 0, sizeof(XKeyPressedEvent));
+		    vim_memset((char *) &keyEvent, 0, sizeof(XKeyPressedEvent));
 		    keyEvent.type = KeyPress;
 		    keyEvent.serial = 1;
 		    keyEvent.send_event = True;