1 files changed, 6 insertions, 5 deletions
diff --git a/activemodel/lib/active_model/type/immutable_string.rb b/activemodel/lib/active_model/type/immutable_string.rb
index cfa4b3fb4b..20b8ca0cc4 100644
--- a/activemodel/lib/active_model/type/immutable_string.rb
+++ b/activemodel/lib/active_model/type/immutable_string.rb
@@ -17,11 +17,12 @@ module ActiveModel
       private
 
       def cast_value(value)
-        case value
-        when true then "t"
-        when false then "f"
-        else value.to_s.freeze
-        end
+        result = case value
+                 when true then "t"
+                 when false then "f"
+                 else value.to_s
+                 end
+        result.freeze
       end
     end
   end