lib/redis/store/marshalling.rb in redis-store-1.1.3 vs lib/redis/store/marshalling.rb in redis-store-1.1.4

@@ -41,10 +41,11 @@
           result && result.size > 0 && marshal?(options)
         end
 
         if defined?(Encoding)
           def encode(string)
-            string.to_s.force_encoding(Encoding::BINARY)
+            key = string.to_s.dup
+            key.force_encoding(Encoding::BINARY)
           end
         else
           def encode(string)
             string
           end