1 files changed, 1 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index 073d5cbf1b..8e73f07d7e 100644
--- a/diff.h
+++ b/diff.h
@@ -174,6 +174,7 @@ extern void diff_unmerge(struct diff_options *,
 
 extern int git_diff_basic_config(const char *var, const char *value);
 extern int git_diff_ui_config(const char *var, const char *value);
+extern int diff_use_color_default;
 extern void diff_setup(struct diff_options *);
 extern int diff_opt_parse(struct diff_options *, const char **, int);
 extern int diff_setup_done(struct diff_options *);