Index: branches/5.3.x/core/install/upgrades.sql
===================================================================
diff -u -N -r16124 -r16213
--- branches/5.3.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 16124)
+++ branches/5.3.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 16213)
@@ -3021,4 +3021,8 @@
 ALTER TABLE SiteDomains
 	CHANGE SSLUrl SSLDomainName VARCHAR(255) NOT NULL DEFAULT '',
 	CHANGE SSLUrlUsesRegExp SSLDomainNameUsesRegExp TINYINT(4) NOT NULL DEFAULT '0';
-DELETE FROM UserPersistentSessionData WHERE VariableName = 'site-domain[Default]columns_.';
\ No newline at end of file
+DELETE FROM UserPersistentSessionData WHERE VariableName = 'site-domain[Default]columns_.';
+
+UPDATE Modules
+SET ClassNamespace = 'InPortal\\Core'
+WHERE `Name` IN ('Core', 'In-Portal');