diff --git a/gtk/inspector/gestures.c b/gtk/inspector/gestures.c
index e62d408b2f..b6e87d9f0b 100644
--- a/gtk/inspector/gestures.c
+++ b/gtk/inspector/gestures.c
@@ -218,7 +218,7 @@ gtk_inspector_gestures_set_object (GtkInspectorGestures *sl,
       gpointer key, value;
       GtkGesture *gesture;
       g_hash_table_iter_init (&iter, hash);
-      g_hash_table_iter_next (&iter, &key, &value);
+      (void)g_hash_table_iter_next (&iter, &key, &value);
       gesture = key;
       add_gesture_group (sl, object, gesture, hash);
     }