diff --git a/gst/compositor/compositor.c b/gst/compositor/compositor.c
index 64d05ac180..d015d85e10 100644
--- a/gst/compositor/compositor.c
+++ b/gst/compositor/compositor.c
@@ -351,8 +351,8 @@ is_rectangle_contained (GstVideoRectangle rect1, GstVideoRectangle rect2)
 }
 
 static GstVideoRectangle
-clamp_rectangle (gint x, gint y, gint w, gint h, guint outer_width,
-    guint outer_height)
+clamp_rectangle (gint x, gint y, gint w, gint h, gint outer_width,
+    gint outer_height)
 {
   gint x2 = x + w;
   gint y2 = y + h;
diff --git a/tests/check/elements/compositor.c b/tests/check/elements/compositor.c
index dc1a58f031..ccd68a1970 100644
--- a/tests/check/elements/compositor.c
+++ b/tests/check/elements/compositor.c
@@ -1326,6 +1326,17 @@ GST_START_TEST (test_obscured_skipped)
   out_width = out_height = 0;
   buffer_mapped = FALSE;
 
+  xpos1 = -1;
+  xpos0 = ypos0 = width0 = height0 = width1 = height1 = 10;
+  out_width = out_height = 20;
+  GST_INFO ("testing bug 754576");
+  _test_obscured (caps_str, xpos0, ypos0, width0, height0, alpha0, xpos1, ypos1,
+      width1, height1, alpha1, out_width, out_height);
+  fail_unless (buffer_mapped == TRUE);
+  xpos0 = xpos1 = ypos1 = width0 = height0 = width1 = height1 = 0;
+  out_width = out_height = 0;
+  buffer_mapped = FALSE;
+
   xpos0 = ypos0 = 10000;
   out_width = 320;
   out_height = 240;