diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index 5faf00189..c8a0d2770 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -176,7 +176,7 @@ bool cmCTestAddSubdirectoryCommand
   cmSystemTools::ChangeDirectory(cwd);
   std::string fname = cwd;
   fname += "/";
-  fname += args[1];
+  fname += args[0];
 
   if ( !cmSystemTools::FileExists(fname.c_str()) )
     {