diff --git a/src/winwidget.c b/src/winwidget.c
index ae34045682982242056240d64448d0489522f3c5..0a9adc888b606fe03d8a66f64d0d89a2374b0fc1 100644
--- a/src/winwidget.c
+++ b/src/winwidget.c
@@ -42,6 +42,7 @@ static winwidget winwidget_allocate(void)
 	winwidget ret = NULL;
 
 	ret = emalloc(sizeof(_winwidget));
+	memset(ret, 0, sizeof(_winwidget));
 
 	ret->win = 0;
 	ret->w = 0;