diff --git a/Source/cmCTest.h b/Source/cmCTest.h
index adfafdfb0..9916a0059 100644
--- a/Source/cmCTest.h
+++ b/Source/cmCTest.h
@@ -172,7 +172,7 @@ public:
 
   ///! The max output width
   int GetMaxTestNameWidth() const;
-  int SetMaxTestNameWidth(int w) { this->MaxTestNameWidth = w;}
+  void SetMaxTestNameWidth(int w) { this->MaxTestNameWidth = w;}
 
   /**
    * Run a single executable command and put the stdout and stderr