diff --git a/graphics/ruby-qt2gl/Makefile b/graphics/ruby-qt2gl/Makefile
index fadf01e8a879..831c0b519182 100644
--- a/graphics/ruby-qt2gl/Makefile
+++ b/graphics/ruby-qt2gl/Makefile
@@ -27,7 +27,7 @@ USE_RUBY_EXTCONF=	yes
 USE_GMAKE=	yes
 
 WRKSRC=		${RUBY_QT2_WRKSRC}/modules/opengl
-CONFIGURE_ARGS=	${RUBY_QT2_CONFIGURE_ARGS}
+CONFIGURE_ARGS=	${RUBY_QT2_CONFIGURE_ARGS:S/--with-qt2=qt2/--with-qt2=qtgl/}
 MAKE_ARGS=	LOCAL_LIBS=-lgcc
 INSTALL_TARGET=	site-install