diff --git a/libs/widgets/frame.cc b/libs/widgets/frame.cc
index 1b3d25c289..fa840ab796 100644
--- a/libs/widgets/frame.cc
+++ b/libs/widgets/frame.cc
@@ -145,10 +145,10 @@ Frame::on_size_allocate (Allocation& alloc)
 
 	Allocation child_alloc;
 	if (alloc.get_width () < _min_size.width || alloc.get_height () < _min_size.height) {
-#if 0
+#ifndef NDEBUG
 		printf ("Frame::on_size_allocate %dx%d < %dx%d\n", alloc.get_width (), alloc.get_height (), _min_size.width, _min_size.height);
-#endif
 		return;
+#endif
 	}
 
 	int pb_l, pb_t;