diff --git a/db_structure.xml b/db_structure.xml
index bdbb16759d..879bbcb48a 100644
--- a/db_structure.xml
+++ b/db_structure.xml
@@ -53,7 +53,7 @@
 	   <type>integer</type>
 	   <default>0</default>
 	   <notnull>true</notnull>
-	   <length>8</length>
+	   <length>4</length>
    </field>
 
    <field>