diff --git a/complex.c b/complex.c
index 8c7f007b44..6c94f9a764 100644
--- a/complex.c
+++ b/complex.c
@@ -843,10 +843,11 @@ f_divide(VALUE self, VALUE other,
     }
     if (k_numeric_p(other) && f_real_p(other)) {
 	get_dat1(self);
-
-	return f_complex_new2(CLASS_OF(self),
-			      (*func)(dat->real, other),
-			      (*func)(dat->imag, other));
+        return f_complex_new2(CLASS_OF(self),
+                              rb_rational_canonicalize(
+                                  (*func)(dat->real, other)),
+                              rb_rational_canonicalize(
+                                  (*func)(dat->imag, other)));
     }
     return rb_num_coerce_bin(self, other, id);
 }
diff --git a/test/ruby/test_complex.rb b/test/ruby/test_complex.rb
index 4aa3eda1d4..80d1dc7e55 100644
--- a/test/ruby/test_complex.rb
+++ b/test/ruby/test_complex.rb
@@ -427,11 +427,13 @@ class Complex_Test < Test::Unit::TestCase
     assert_equal(Complex(Rational(3,2),Rational(3)), c / Rational(2,3))
 
     c = Complex(1)
-    r = c / c
-    assert_instance_of(Complex, r)
-    assert_equal(1, r)
-    assert_predicate(r.real, :integer?)
-    assert_predicate(r.imag, :integer?)
+    [ 1, Rational(1), c ].each do |d|
+      r = c / d
+      assert_instance_of(Complex, r)
+      assert_equal(1, r)
+      assert_predicate(r.real, :integer?)
+      assert_predicate(r.imag, :integer?)
+    end
   end
 
   def test_quo