diff --git a/help.c b/help.c
index ec670d5f68..d04542d826 100644
--- a/help.c
+++ b/help.c
@@ -39,7 +39,7 @@ static struct category_description main_categories[] = {
 	{ CAT_synchingrepositories, N_("Low-level Commands / Syncing Repositories") },
 	{ CAT_purehelpers, N_("Low-level Commands / Internal Helpers") },
 	{ CAT_userinterfaces, N_("User-facing repository, command and file interfaces") },
-	{ CAT_developerinterfaces, N_("Developer-facing file file formats, protocols and interfaces") },
+	{ CAT_developerinterfaces, N_("Developer-facing file formats, protocols and other interfaces") },
 	{ 0, NULL }
 };
 
diff --git a/t/t0012-help.sh b/t/t0012-help.sh
index 4ed2f242eb..dbfc5c8267 100755
--- a/t/t0012-help.sh
+++ b/t/t0012-help.sh
@@ -231,7 +231,7 @@ test_expect_success "'git help -a' section spacing" '
 
 	User-facing repository, command and file interfaces
 
-	Developer-facing file file formats, protocols and interfaces
+	Developer-facing file formats, protocols and other interfaces
 	EOF
 	test_cmp expect actual
 '