diff --git a/src/win32/utf-conv.h b/src/win32/utf-conv.h
index 967db859e..835dc75a3 100644
--- a/src/win32/utf-conv.h
+++ b/src/win32/utf-conv.h
@@ -6,6 +6,7 @@
  */
 
 #include <wchar.h>
+#include "common.h"
 
 #ifndef INCLUDE_git_utfconv_h__
 #define INCLUDE_git_utfconv_h__