Index: head/databases/qt4-ibase-plugin/Makefile
===================================================================
--- head/databases/qt4-ibase-plugin/Makefile	(revision 416082)
+++ head/databases/qt4-ibase-plugin/Makefile	(revision 416083)
@@ -1,10 +1,10 @@
 # Created by: Michael Nottebrock <lofi@FreeBSD.org>
 # $FreeBSD$
 
 PORTREVISION=	1
 
 COMMENT=	Qt InterBase/Firebird database plugin
 DB=		ibase
-USES+=		firebird
+USES=		firebird
 
 .include "${.CURDIR:H:H}/devel/qt4/Makefile.sqldrivers"