2 files changed, 4 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/core_ext/hash/keys.rb b/activesupport/lib/active_support/core_ext/hash/keys.rb
index 05679f1dd0..963c6a8e67 100644
--- a/activesupport/lib/active_support/core_ext/hash/keys.rb
+++ b/activesupport/lib/active_support/core_ext/hash/keys.rb
@@ -10,7 +10,7 @@ class Hash
   #
   #  hash.transform_keys.with_index { |k, i| [k, i].join } # => {"name0"=>"Rob", "age1"=>"28"}
   def transform_keys
-    return enum_for(:transform_keys) unless block_given?
+    return enum_for(:transform_keys) { size } unless block_given?
     result = self.class.new
     each_key do |key|
       result[yield(key)] = self[key]
@@ -21,7 +21,7 @@ class Hash
   # Destructively converts all keys using the +block+ operations.
   # Same as +transform_keys+ but modifies +self+.
   def transform_keys!
-    return enum_for(:transform_keys!) unless block_given?
+    return enum_for(:transform_keys!) { size } unless block_given?
     keys.each do |key|
       self[yield(key)] = delete(key)
     end
diff --git a/activesupport/lib/active_support/core_ext/hash/transform_values.rb b/activesupport/lib/active_support/core_ext/hash/transform_values.rb
index 9ddb838774..7d507ac998 100644
--- a/activesupport/lib/active_support/core_ext/hash/transform_values.rb
+++ b/activesupport/lib/active_support/core_ext/hash/transform_values.rb
@@ -9,7 +9,7 @@ class Hash
   #
   #   { a: 1, b: 2 }.transform_values.with_index { |v, i| [v, i].join.to_i } # => { a: 10, b: 21 }
   def transform_values
-    return enum_for(:transform_values) unless block_given?
+    return enum_for(:transform_values) { size } unless block_given?
     return {} if empty?
     result = self.class.new
     each do |key, value|
@@ -21,7 +21,7 @@ class Hash
   # Destructively converts all values using the +block+ operations.
   # Same as +transform_values+ but modifies +self+.
   def transform_values!
-    return enum_for(:transform_values!) unless block_given?
+    return enum_for(:transform_values!) { size } unless block_given?
     each do |key, value|
       self[key] = yield(value)
     end