diff --git a/src/cligen/command/argument.cr b/src/cligen/command/argument.cr
index c602dd1..fe5b18f 100644
--- a/src/cligen/command/argument.cr
+++ b/src/cligen/command/argument.cr
@@ -15,7 +15,7 @@ module CliGen
         {% long = "--#{name.downcase}" %}
       {% end %}
       {% raise "ERROR : CliGen::Command.argument(#{name}) : You must provide a description" unless description %}
-      {% raise "ERROR : CliGen::Command.argument(#{name}) : Provided description must be a String" unless description.is_a? StringLiteral %}
+      {% raise "ERROR : CliGen::Command.argument(#{name}) : Provided description must be a String" unless description.is_a? StringLiteral || description.is_a? StringInterpolation %}
       {% unless on_match.nil? %}
         {% puts "DEBUG : #{@type.name}.argument(#{name}) : OnMatch:\n\tid: #{on_match}\n\treturn_type: #{on_match.return_type}\n\tinput_vars: #{on_match.args}" if env("DEBUG")%}
         {% raise "ERROR : CliGen::Command.argument(#{name}) : Provided on_match must be a Proc" unless on_match.is_a? ProcLiteral %}