diff --git a/README.md b/README.md
index de15b8e..6443c7d 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ git clone https://git-x.kongjian.xin/FGFS-4.1/plib-mac-dist.git
 
 mv plib-mac-dist install
 
-git clone https://github.com/openscenegraph/OpenSceneGraph.git
+git clone https://git-x.kongjian.xin/FGFS-4.1/OpenSceneGraph.git
 cd OpenSceneGraph
 git checkout OpenSceneGraph-3.6.0
 cd ..