diff --git a/lib/kafo/data_type.rb b/lib/kafo/data_type.rb
index eaa0c92b..b3cdb8d3 100644
--- a/lib/kafo/data_type.rb
+++ b/lib/kafo/data_type.rb
@@ -53,7 +53,7 @@ def self.split_arguments(input)
           args << quoted[0..-2]  # store unquoted value
 
         else # bare words, or Type::Name, or Type::Name[args..]
-          type = scanner.scan(/[\w:-]+/) or raise ConfigurationException, "missing argument #{args.count + 1} to data type #{input}"#
+          type = scanner.scan(/[\w:-]+/) or raise ConfigurationException, "missing argument #{args.count + 1} to data type #{input}"
 
           # store inner arguments as a continuation of the type string
           if scanner.peek(1) == '['