diff --git a/src/cligen/command/.argument.cr.swp b/src/cligen/command/.argument.cr.swp
new file mode 100644
index 0000000..a1f9328
Binary files /dev/null and b/src/cligen/command/.argument.cr.swp differ
diff --git a/src/cligen/command/argument.cr b/src/cligen/command/argument.cr
index 43252db..2b00492 100644
--- a/src/cligen/command/argument.cr
+++ b/src/cligen/command/argument.cr
@@ -41,7 +41,7 @@ module CliGen
         {% format = format.resolve if format.is_a? Path %}
         {% raise "ERROR : CliGen::Command.argument(#{name}) : Provided format must be a RegexLiteral" unless format.is_a? RegexLiteral %}
       {% end %}
-      {% if type.resolve <= Array && format.nil? %}
+      {% if type.resolve <= Array %}
         {% elem = type.type_vars.first %}
         {% unless elem == Int32 %}
           {% if format.nil? && options.nil? %}