1 files changed, 1 insertions, 0 deletions

diff --git a/merge.c b/merge.c
index 74ced7f70b..fcff632bd6 100644
--- a/merge.c
+++ b/merge.c
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "lockfile.h"
 #include "commit.h"
 #include "run-command.h"
 #include "resolve-undo.h"