diff --git a/hash.c b/hash.c
index e9d994bf70..8b84a14484 100644
--- a/hash.c
+++ b/hash.c
@@ -5276,9 +5276,9 @@ env_each_value(VALUE ehash)
 
 /*
  * call-seq:
- *   ENV.each      { |name, value| block } -> Hash
+ *   ENV.each      { |name, value| block } -> ENV
  *   ENV.each                              -> Enumerator
- *   ENV.each_pair { |name, value| block } -> Hash
+ *   ENV.each_pair { |name, value| block } -> ENV
  *   ENV.each_pair                         -> Enumerator
  *
  * Yields each environment variable +name+ and +value+.
diff --git a/spec/ruby/core/env/shared/each.rb b/spec/ruby/core/env/shared/each.rb
index 8a262e4862..b72f01b3b6 100644
--- a/spec/ruby/core/env/shared/each.rb
+++ b/spec/ruby/core/env/shared/each.rb
@@ -2,13 +2,14 @@
 
 describe :env_each, shared: true do
   it "returns each pair" do
+    env_object_id = ENV.object_id
     orig = ENV.to_hash
     e = []
     begin
       ENV.clear
       ENV["foo"] = "bar"
       ENV["baz"] = "boo"
-      ENV.send(@method) { |k, v| e << [k, v] }
+      ENV.send(@method) { |k, v| e << [k, v] }.object_id.should == env_object_id
       e.should include(["foo", "bar"])
       e.should include(["baz", "boo"])
     ensure