diff --git a/db_structure.xml b/db_structure.xml
index a7225a7661..a41892e39e 100644
--- a/db_structure.xml
+++ b/db_structure.xml
@@ -884,7 +884,7 @@
 				<type>text</type>
 				<default></default>
 				<notnull>true</notnull>
-				<length>256</length>
+				<length>255</length>
 			</field>
 
 			<field>