diff --git a/src/version.h.in b/src/version.h.in
index 01cfa7c5..6bfd14e5 100644
--- a/src/version.h.in
+++ b/src/version.h.in
@@ -1,3 +1,4 @@
+#pragma once
 #define GIT_COMMIT_HASH    "@HASH@"
 #define GIT_BRANCH         "@BRANCH@"
 #define GIT_COMMIT_MESSAGE "@MESSAGE@"