1 files changed, 1 insertions, 4 deletions
diff --git a/Source/cmLinkedTree.h b/Source/cmLinkedTree.h
index c7453eac92..d70176dfca 100644
--- a/Source/cmLinkedTree.h
+++ b/Source/cmLinkedTree.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 cmLinkedTree_h
-#define cmLinkedTree_h
+#pragma once
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
@@ -188,5 +187,3 @@ private:
   std::vector<T> Data;
   std::vector<PositionType> UpPositions;
 };
-
-#endif