diff --git a/src/calibre/gui2/geometry.py b/src/calibre/gui2/geometry.py
index af765daac1..dc39430083 100644
--- a/src/calibre/gui2/geometry.py
+++ b/src/calibre/gui2/geometry.py
@@ -13,7 +13,7 @@ from calibre.utils.config_base import tweaks
 
 
 def is_debugging():
-    return _is_debugging() and not tweaks.get('suppress_geometry_debug_output')
+    return _is_debugging() and tweaks.get('show_geometry_debug_output')
 
 
 def debug(*a, **kw):