diff --git a/orocos_kdl/Makefile b/orocos_kdl/Makefile
index 078e724..0ef3886 100644
--- a/orocos_kdl/Makefile
+++ b/orocos_kdl/Makefile
@@ -2,6 +2,7 @@ ifdef ROS_ROOT
 INSTALL_PREFIX=${PWD}/install_dir
 EXTRA_CMAKE_FLAGS=-DCMAKE_INSTALL_PREFIX=${INSTALL_PREFIX} \
 		-DBUILD_MODELS=ON \
+		-DCMAKE_OSX_ARCHITECTURES="i386;x86_64" \
 		-DCMAKE_BUILD_TYPE="Release"\
 		-DENABLE_TESTS=ON
 
diff --git a/rosdep.yaml b/rosdep.yaml
index 2258de0..cabe137 100644
--- a/rosdep.yaml
+++ b/rosdep.yaml
@@ -3,6 +3,9 @@ python-sip:
   debian: python-sip4-dev sip4
   fedora: sip-devel
   macports: py26-sip
+  osxbrew:
+    homebrew:
+      packages: [ sip ]
   gentoo: dev-python/sip
   arch: sip
   freebsd: py26-sip