2 files changed, 5 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 860ef17dca..45c7922277 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -112,19 +112,19 @@ module ActiveRecord
       end
 
       def quoted_true
-        "'t'"
+        "'t'".freeze
       end
 
       def unquoted_true
-        't'
+        't'.freeze
       end
 
       def quoted_false
-        "'f'"
+        "'f'".freeze
       end
 
       def unquoted_false
-        'f'
+        'f'.freeze
       end
 
       # Quote date/time values for use in SQL input. Includes microseconds
diff --git a/activerecord/lib/active_record/connection_adapters/mysql/quoting.rb b/activerecord/lib/active_record/connection_adapters/mysql/quoting.rb
index fbab654112..5b59e39d9f 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql/quoting.rb
@@ -2,7 +2,7 @@ module ActiveRecord
   module ConnectionAdapters
     module MySQL
       module Quoting # :nodoc:
-        QUOTED_TRUE, QUOTED_FALSE = '1', '0'
+        QUOTED_TRUE, QUOTED_FALSE = '1'.freeze, '0'.freeze
 
         def quote_column_name(name)
           @quoted_column_names[name] ||= "`#{super.gsub('`', '``')}`"