diff --git a/vm_eval.c b/vm_eval.c
index b1d3915563..a53f8f614c 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -273,10 +273,10 @@ check_funcall(VALUE recv, ID mid, int argc, VALUE *argv)
 
     me = rb_method_entry(klass, idRespond_to);
     if (me && !(me->flag & NOEX_BASIC)) {
-      VALUE args[2];
+	VALUE args[2];
 
-      args[0] = ID2SYM(mid);
-      args[1] = Qtrue;
+	args[0] = ID2SYM(mid);
+	args[1] = Qtrue;
 	if (!RTEST(vm_call0(th, recv, idRespond_to, 2, args, me))) {
 	    return Qundef;
 	}