1 files changed, 1 insertions, 4 deletions
diff --git a/Source/cmString.hxx b/Source/cmString.hxx
index 40fe20d..b41b960 100644
--- a/Source/cmString.hxx
+++ b/Source/cmString.hxx
@@ -1,7 +1,6 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef cmString_hxx
-#define cmString_hxx
+#pragma once
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
@@ -928,5 +927,3 @@ struct hash<cm::String>
   }
 };
 }
-
-#endif