--- a/RegressionTests__Win32OperatingSystemTest.st	Mon May 07 16:03:26 2012 +0200
+++ b/RegressionTests__Win32OperatingSystemTest.st	Mon May 07 16:13:34 2012 +0200
@@ -3,10 +3,10 @@
 "{ NameSpace: RegressionTests }"
 
 TestCase subclass:#Win32OperatingSystemTest
-        instanceVariableNames:''
-        classVariableNames:''
-        poolDictionaries:''
-        category:'tests-Regression'
+	instanceVariableNames:''
+	classVariableNames:''
+	poolDictionaries:''
+	category:'tests-Regression'
 !
 
 
@@ -20,6 +20,10 @@
 testMutex
     |handle alreadyExists lastErrorCode handleAndLastErrorCode|
 
+    OperatingSystem isMSWINDOWSlike ifFalse:[
+        ^ self.
+    ].
+
     handleAndLastErrorCode := Win32OperatingSystem createMutexNamed: '8906f5e0-54ed-11dd-9da4-001558137da0'.
     handle := handleAndLastErrorCode first.
     handle isNil ifTrue:[^ self].