diff --git a/scripts/macosx-build-dependencies.sh b/scripts/macosx-build-dependencies.sh
index d06c90ee..0ed375fb 100755
--- a/scripts/macosx-build-dependencies.sh
+++ b/scripts/macosx-build-dependencies.sh
@@ -125,7 +125,7 @@ build_cgal()
   tar xzf CGAL-$version.tar.gz
   cd CGAL-$version
   # We build a static lib. Not really necessary, but it's well tested.
-  cmake -DCMAKE_INSTALL_PREFIX=$DEPLOYDIR -DBUILD_SHARED_LIBS=FALSE -DCMAKE_OSX_DEPLOYMENT_TARGET="10.5" -DCMAKE_OSX_ARCHITECTURES="i386;x86_64"
+  cmake -DCMAKE_INSTALL_PREFIX=$DEPLOYDIR -DBUILD_SHARED_LIBS=FALSE -DCMAKE_OSX_DEPLOYMENT_TARGET="10.5" -DCMAKE_OSX_ARCHITECTURES="i386;x86_64" -DBOOST_ROOT=$DEPLOYDIR
   make -j4
   make install
 }