diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 6e6abfe18..80a945477 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -930,7 +930,8 @@ bool cmSystemTools::RunCommand(const char* command,
   std::string commandToFile = command;
   commandToFile += " > ";
   std::string tempFile;
-  tempFile += cmSystemTools::TemporaryFileName();
+  tempFile += _tempnam(0, "cmake");
+
   commandToFile += tempFile;
   retVal = system(commandToFile.c_str());
   std::ifstream fin(tempFile.c_str());
@@ -982,18 +983,6 @@ bool cmSystemTools::RunCommand(const char* command,
 #endif
 }
 
-#ifdef _MSC_VER
-#define tempnam _tempnam
-#endif
-
-std::string cmSystemTools::TemporaryFileName()
-{
-  /** \warning in Unix is recomended to use mkstemp( char * ) 
-   instead of tempnam in order to avoid the security
-   risk of setting rights with 0666 */
-  return tempnam(0, "cmake");
-}
-
 /**
  * Find the file the given name.  Searches the given path and then
  * the system search path.  Returns the full path to the file if it is
diff --git a/Source/cmSystemTools.h b/Source/cmSystemTools.h
index be952fcbe..9e7fc354b 100644
--- a/Source/cmSystemTools.h
+++ b/Source/cmSystemTools.h
@@ -282,9 +282,6 @@ public:
   static bool RunCommand(const char* command, std::string& output,
                          int &retVal, bool verbose = true);
   
-  ///! Generate a temporary file name
-  static std::string TemporaryFileName();
-
   ///! change directory the the directory specified
   static int ChangeDirectory(const char* dir);