1 files changed, 1 insertions, 1 deletions

diff --git a/editors/diff.c b/editors/diff.c
index 1359af838..f9e82ba02 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -1205,7 +1205,7 @@ static void diffdir(char *p1, char *p2)
 
 
 int diff_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int diff_main(int argc, char **argv)
+int diff_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
         bool gotstdin = 0;
         char *U_opt;