1 files changed, 1 insertions, 4 deletions
diff --git a/Source/cmPropertyDefinition.h b/Source/cmPropertyDefinition.h
index f83bc4f..fca936e 100644
--- a/Source/cmPropertyDefinition.h
+++ b/Source/cmPropertyDefinition.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 cmPropertyDefinition_h
-#define cmPropertyDefinition_h
+#pragma once
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
@@ -65,5 +64,3 @@ private:
   using key_type = std::pair<std::string, cmProperty::ScopeType>;
   std::map<key_type, cmPropertyDefinition> Map_;
 };
-
-#endif