--- a/GraphicsMedium.st	Fri Dec 16 13:52:51 2016 +0100
+++ b/GraphicsMedium.st	Fri Dec 16 14:37:58 2016 +0100
@@ -1408,7 +1408,7 @@
      (not all devices care for this).
      If the receiver is a pixmap, the call always returns immediately."
 
-    |deviceDrawable mustWait sourceDepth myDepth|
+    |deviceDrawable mustWait sourceDepth|
 
     ((aDrawable graphicsDevice ~~ device)
      or:[aDrawable isImage]) ifTrue:[
@@ -1417,8 +1417,9 @@
         deviceDrawable := aDrawable
     ].
     sourceDepth := deviceDrawable depth.
-    myDepth := device depth.
-    mustWait := async not and:[deviceDrawable isView and:[((sourceDepth ~~ 1) or:[myDepth == 1])]].
+    mustWait := async not 
+                    and:[deviceDrawable isView 
+                    and:[(sourceDepth ~~ 1) or:[device depth == 1]]].
     mustWait ifTrue:[
         mustWait := self catchExpose.
     ].