diff --git a/util/test-hb-subset-parsing.c b/util/test-hb-subset-parsing.c
index 553743861..b241f0896 100644
--- a/util/test-hb-subset-parsing.c
+++ b/util/test-hb-subset-parsing.c
@@ -101,9 +101,9 @@ test_parse_instancing_spec (void)
 
 
 int
-main (int argc, char **argv)
+main (int, char **)
 {
   test_parse_instancing_spec();
-  
+
   return 0;
 }