diff --git a/lib/liquid/context.rb b/lib/liquid/context.rb
index f5fef8c..d37cf91 100644
--- a/lib/liquid/context.rb
+++ b/lib/liquid/context.rb
@@ -133,9 +133,9 @@ module Liquid
         else
           case key
           when /^'(.*)'$/ # Single quoted strings
-            $1.to_s
+            $1
           when /^"(.*)"$/ # Double quoted strings
-            $1.to_s
+            $1
           when /^(\d+)$/ # Integer and floats
             $1.to_i
           when /^\((\S+)\.\.(\S+)\)$/ # Ranges