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-rw-r--r--src/libexpr/nixexpr.hh6
1 files changed, 1 insertions, 5 deletions
diff --git a/src/libexpr/nixexpr.hh b/src/libexpr/nixexpr.hh
index 6eb771a726b4..4c1a0bb2d5fb 100644
--- a/src/libexpr/nixexpr.hh
+++ b/src/libexpr/nixexpr.hh
@@ -1,5 +1,4 @@
-#ifndef __NIXEXPR_H
-#define __NIXEXPR_H
+#pragma once
 
 #include "value.hh"
 #include "symbol-table.hh"
@@ -290,6 +289,3 @@ struct StaticEnv
 
 
 }
-
-
-#endif /* !__NIXEXPR_H */