diff --git a/hw/xwayland/xwayland-shm.c b/hw/xwayland/xwayland-shm.c
index d1127efc0..bce74fa1d 100644
--- a/hw/xwayland/xwayland-shm.c
+++ b/hw/xwayland/xwayland-shm.c
@@ -210,7 +210,7 @@ xwl_shm_create_pixmap(ScreenPtr screen,
     if (!pixmap)
         return NULL;
 
-    xwl_pixmap = malloc(sizeof *xwl_pixmap);
+    xwl_pixmap = calloc(1, sizeof(*xwl_pixmap));
     if (xwl_pixmap == NULL)
         goto err_destroy_pixmap;