diff --git a/tests/interactive/test-depth.c b/tests/interactive/test-depth.c
index 02e5e8bce..34c024ede 100644
--- a/tests/interactive/test-depth.c
+++ b/tests/interactive/test-depth.c
@@ -26,7 +26,7 @@ raise_top (gpointer ignored)
 static ClutterActor *
 clone_box (ClutterTexture *original)
 {
-  guint width, height;
+  gint width, height;
   ClutterActor *group;
   ClutterActor *clone;