Fix gcc8 warnings

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index d81d233..5be8284 100644
--- a/src/main.c
+++ b/src/main.c
@@ -320,7 +320,7 @@ main (gint argc, gchar **argv)
       windows = NULL;
 
       /* destroy all windows */
-      g_slist_foreach (windows_destroy, (GFunc) gtk_widget_destroy, NULL);
+      g_slist_foreach (windows_destroy, (GFunc) (void (*)(void)) gtk_widget_destroy, NULL);
       g_slist_free (windows_destroy);
     }