diff --git a/src/EvToWire.c b/src/EvToWire.c
index 1433527..714842b 100644
--- a/src/EvToWire.c
+++ b/src/EvToWire.c
@@ -50,6 +50,7 @@ register Display *dpy,	/* pointer to display structure */
 register XEvent *re,	/* pointer to where event should be reformatted */
 register xEvent *event)	/* wire protocol event */
 {
+	memset(event, 0, SIZEOF(xEvent));
 	switch (event->u.u.type = re->type) {
 	      case KeyPress:
 	      case KeyRelease: