1 files changed, 1 insertions, 4 deletions
diff --git a/Source/cmGeneratorExpressionParser.h b/Source/cmGeneratorExpressionParser.h
index 1ba1654..d49bf3e 100644
--- a/Source/cmGeneratorExpressionParser.h
+++ b/Source/cmGeneratorExpressionParser.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 cmGeneratorExpressionParser_h
-#define cmGeneratorExpressionParser_h
+#pragma once
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
@@ -30,5 +29,3 @@ private:
   const std::vector<cmGeneratorExpressionToken> Tokens;
   unsigned int NestingLevel;
 };
-
-#endif