diff --git a/interface-definitions/include/generic-description.xml.i b/interface-definitions/include/generic-description.xml.i
index 0b3701534..7e091eae7 100644
--- a/interface-definitions/include/generic-description.xml.i
+++ b/interface-definitions/include/generic-description.xml.i
@@ -1,15 +1,15 @@
 <!-- include start from generic-description.xml.i -->
 <leafNode name="description">
   <properties>
     <help>Description</help>
     <valueHelp>
       <format>txt</format>
       <description>Description</description>
     </valueHelp>
     <constraint>
-      <regex>[[:ascii:]]{0,255}</regex>
+      <regex>.{0,255}</regex>
     </constraint>
     <constraintErrorMessage>Description too long (limit 255 characters)</constraintErrorMessage>
   </properties>
 </leafNode>
 <!-- include end -->