lib/ably/modules/conversions.rb in ably-1.0.5 vs lib/ably/modules/conversions.rb in ably-1.0.6

@@ -94,10 +94,10 @@
     #
     def ensure_utf_8(field_name, string_value, options = {})
       unless options[:allow_nil] && string_value.nil?
         raise ArgumentError, "#{field_name} must be a String" unless string_value.kind_of?(String)
       end
-      string_value.encode!(Encoding::UTF_8) if string_value
+      string_value.encode(Encoding::UTF_8) if string_value
     rescue Encoding::UndefinedConversionError, Encoding::InvalidByteSequenceError => e
       raise ArgumentError, "#{field_name} could not be converted to UTF-8: #{e.message}"
     end
 
     # Ensures that the payload is a type supported by all Ably client libraries.