diff --git a/WPrefs.app/Menu.c b/WPrefs.app/Menu.c
index 87c7a34d..20b992ce 100644
--- a/WPrefs.app/Menu.c
+++ b/WPrefs.app/Menu.c
@@ -291,6 +291,8 @@ static void changedItemPad(WMWidget * w, void *data)
 	_Panel *panel = (_Panel *) data;
 	int padn = WMGetPopUpButtonSelectedItem(w);
 
+	if (padn < 0)
+		return;
 	WMUnmapWidget(panel->itemPad[panel->currentPad]);
 	WMMapWidget(panel->itemPad[padn]);