diff --git a/rational.c b/rational.c
index 0c64f797af..1e40841bee 100644
--- a/rational.c
+++ b/rational.c
@@ -1896,7 +1896,7 @@ numeric_quo(VALUE x, VALUE y)
     {
         x = rb_convert_type(x, T_RATIONAL, "Rational", "to_r");
     }
-    return rb_funcall(x, '/', 1, y);
+    return nurat_div(x, y);
 }