diff --git a/lib/chupa-text/command/chupa-text.rb b/lib/chupa-text/command/chupa-text.rb
index 7fa82d9..9d7a1ca 100644
--- a/lib/chupa-text/command/chupa-text.rb
+++ b/lib/chupa-text/command/chupa-text.rb
@@ -97,7 +97,6 @@ def create_option_parser
                   "[#{AVAILABLE_FORMATS.join(', ')}]",
                   "(default: json)") do |format|
           format = format.to_sym
-          raise ArgumentError, "Unknown format: #{format}" unless AVAILABLE_FORMATS.include?(format)
           @format = format
         end