diff --git a/graphics/osg34/Makefile b/graphics/osg34/Makefile
index 485c022d68f7..119c45b08e8a 100644
--- a/graphics/osg34/Makefile
+++ b/graphics/osg34/Makefile
@@ -23,7 +23,7 @@ USE_GITHUB=	yes
 GH_ACCOUNT=	openscenegraph
 GH_PROJECT=	OpenSceneGraph
 
-CONFLICTS=	osg-[0-9]*
+CONFLICTS_INSTALL=osg-[0-9]*
 
 USES=		alias cmake compiler:c++11-lang gl jpeg pkgconfig xorg
 USE_GL=		gl glu