diff --git a/appinfo/database.xml b/appinfo/database.xml
index ff4d751..290e003 100644
--- a/appinfo/database.xml
+++ b/appinfo/database.xml
@@ -23,7 +23,6 @@
 			<field>
 				<name>username</name>
 				<type>text</type>
-				<notnull>true</notnull>
 			</field>
 			<field>
 				<name>password</name>