1 files changed, 1 insertions, 4 deletions
diff --git a/Source/cmPropertyMap.h b/Source/cmPropertyMap.h
index 5fc46a2b4d..cda585a89f 100644
--- a/Source/cmPropertyMap.h
+++ b/Source/cmPropertyMap.h
@@ -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 cmPropertyMap_h
-#define cmPropertyMap_h
+#pragma once
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
@@ -49,5 +48,3 @@ public:
 private:
   std::unordered_map<std::string, std::string> Map_;
 };
-
-#endif