diff -r ef1a928b257e -r 1847ad98cf8e Block.st
--- a/Block.st	Wed Dec 18 18:02:46 2019 +0100
+++ b/Block.st	Wed Dec 18 18:52:05 2019 +0100
@@ -2406,7 +2406,7 @@
     milliseconds := aTimeDurationOrIntegerSeconds isTimeDuration
                         ifTrue:[ aTimeDurationOrIntegerSeconds asMilliseconds ]
                         ifFalse:[ (aTimeDurationOrIntegerSeconds * 1000) truncated].
-    ^ self valueWithWatchDog:[^ nil] afterMilliseconds:milliseconds
+    ^ self valueWithWatchDog:[nil] afterMilliseconds:milliseconds
 
     "
      [