diff --git a/hw/xfree86/common/xf86Events.c b/hw/xfree86/common/xf86Events.c
index 97a1f97b2..6570f0be9 100644
--- a/hw/xfree86/common/xf86Events.c
+++ b/hw/xfree86/common/xf86Events.c
@@ -180,7 +180,7 @@ ProcessInputEvents(void)
 void
 xf86ProcessActionEvent(ActionEvent action, void *arg)
 {
-    DebugF("ProcessActionEvent(%d,%x)\n", (int) action, arg);
+    DebugF("ProcessActionEvent(%d,%p)\n", (int) action, arg);
     switch (action) {
     case ACTION_TERMINATE:
         if (!xf86Info.dontZap) {