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-rw-r--r--src/libutil/immutable.hh5
1 files changed, 1 insertions, 4 deletions
diff --git a/src/libutil/immutable.hh b/src/libutil/immutable.hh
index 5a42a4610736..8af41900490f 100644
--- a/src/libutil/immutable.hh
+++ b/src/libutil/immutable.hh
@@ -1,5 +1,4 @@
-#ifndef __IMMUTABLE_H
-#define __IMMUTABLE_H
+#pragma once
 
 #include <types.hh>
 
@@ -15,5 +14,3 @@ void makeImmutable(const Path & path);
 void makeMutable(const Path & path);
 
 }
-
-#endif /* !__IMMUTABLE_H */