--- a/WindowSensor.st	Thu Dec 08 06:57:37 2016 +0100
+++ b/WindowSensor.st	Sat Dec 10 06:46:25 2016 +0100
@@ -1977,7 +1977,7 @@
                         (wgProcess := evView windowGroup process) notNil ifTrue:[
                             wgProcess isDebugged ifTrue:[
                                 "/ but not for debuggers inside debuggers
-                                (evView topView isKindOf:DebugView) ifFalse:[
+                                (evView topView isDebugView) ifFalse:[
                                     DebugView allInstances do:[:dbg |
                                         dbg inspectedProcess == wgProcess ifTrue:[
                                             dbg window topView raiseDeiconified