1 files changed, 1 insertions, 0 deletions
diff --git a/diff.c b/diff.c
index e697f78a64..73d2ac0367 100644
--- a/diff.c
+++ b/diff.c
@@ -41,6 +41,7 @@
 #include "object-name.h"
 #include "setup.h"
 #include "strmap.h"
+#include "ws.h"
 #include "wrapper.h"
 
 #ifdef NO_FAST_WORKING_DIRECTORY