diff --git a/test/t/integer.rb b/test/t/integer.rb
index 71066bfb16..5a5098b92d 100644
--- a/test/t/integer.rb
+++ b/test/t/integer.rb
@@ -40,6 +40,10 @@
   assert_equal 2, a
   a = 5/2
   assert_equal 2, a
+  b = -1/2
+  assert_equal(-1, b)
+  b = 1/-2
+  assert_equal(-1, b)
   skip unless Object.const_defined?(:Float)
   b = 2/1.0
   assert_equal 2.0, b