2 files changed, 2 insertions, 8 deletions
diff --git a/src/nix-store/dotgraph.hh b/src/nix-store/dotgraph.hh
index 2318e2fde48d..68410d84156d 100644
--- a/src/nix-store/dotgraph.hh
+++ b/src/nix-store/dotgraph.hh
@@ -1,5 +1,4 @@
-#ifndef __DOTGRAPH_H
-#define __DOTGRAPH_H
+#pragma once
 
 #include "types.hh"
 
@@ -8,5 +7,3 @@ namespace nix {
 void printDotGraph(const PathSet & roots);
 
 }
-
-#endif /* !__DOTGRAPH_H */
diff --git a/src/nix-store/xmlgraph.hh b/src/nix-store/xmlgraph.hh
index 2f9908c43665..c2216c5a4627 100644
--- a/src/nix-store/xmlgraph.hh
+++ b/src/nix-store/xmlgraph.hh
@@ -1,5 +1,4 @@
-#ifndef __XMLGRAPH_H
-#define __XMLGRAPH_H
+#pragma once
 
 #include "types.hh"
 
@@ -8,5 +7,3 @@ namespace nix {
 void printXmlGraph(const PathSet & roots);
 
 }
-
-#endif /* !__XMLGRAPH_H */