diff --git a/SystemTools.cxx b/SystemTools.cxx
index a3585dca572002064b5f44c49188aeb98b34e175..5d941caf60d791d8c766ff796b51d958e6da8236 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -2442,8 +2442,8 @@ std::string SystemTools::RelativePath(const char* local, const char* remote)
     && 
 // for windows and apple do a case insensitive string compare    
 #if defined(_WIN32) || defined(__APPLE__)
-    cmSystemTools::Strucmp(localSplit[sameCount].c_str(),
-                           remoteSplit[sameCount].c_str()) == 0
+    SystemTools::Strucmp(localSplit[sameCount].c_str(),
+                         remoteSplit[sameCount].c_str()) == 0
 #else
     localSplit[sameCount] == remoteSplit[sameCount]
 #endif