1 files changed, 1 insertions, 2 deletions
diff --git a/object.c b/object.c
index 398dc6a1a7..d40d19efea 100644
--- a/object.c
+++ b/object.c
@@ -719,8 +719,7 @@ nil_inspect(VALUE obj)
 
 #ifdef NIL_PLUS
 static VALUE
-nil_plus(x, y)
-    VALUE x, y;
+nil_plus(VALUE x, VALUE y)
 {
     switch (TYPE(y)) {
       case T_NIL: