diff --git a/lib/puppet/functions/assert_type.rb b/lib/puppet/functions/assert_type.rb
index 0efa576aa..53d901af7 100644
--- a/lib/puppet/functions/assert_type.rb
+++ b/lib/puppet/functions/assert_type.rb
@@ -1,42 +1,42 @@
 # Returns the given value if it is an instance of the given type, and raises an error otherwise.
 #
 # @example how to assert type
 #   # assert that `$b` is a non empty `String` and assign to `$a`
 #   $a = assert_type(String[1], $b)
 #
 # See the documentation for "The Puppet Type System" for more information about types.
 #
 Puppet::Functions.create_function(:assert_type) do
   dispatch :assert_type do
     param type_type(), 'type'
     param optional(object()), 'value'
   end
 
   dispatch :assert_type_s do
     param String, 'type_string'
     param optional(object()), 'value'
   end
 
   # @param type [Type] the type the value must be an instance of
   # @param value [Optional[Object]] the value to assert
   #
   def assert_type(type, value)
     unless Puppet::Pops::Types::TypeCalculator.instance?(type,value)
       inferred_type = Puppet::Pops::Types::TypeCalculator.infer(value)
       # Do not give all the details - i.e. format as Integer, instead of Integer[n, n] for exact value, which
       # is just confusing. (OTOH: may need to revisit, or provide a better "type diff" output.
       #
       actual = Puppet::Pops::Types::TypeCalculator.generalize!(inferred_type)
       raise Puppet::ParseError, "assert_type(): Expected type #{type} does not match actual: #{actual}"
     end
     value
   end
 
   # @param type_string [String] the type the value must be an instance of given in String form
   # @param value [Optional[Object]] the value to assert
   #
   def assert_type_s(type_string, value)
-    t = Puppet::Pops::Types::TypeParser.new.parse(type_string)      
+    t = Puppet::Pops::Types::TypeParser.new.parse(type_string)
     assert_type(t, value)
   end
 end