diff --git a/Makefile b/Makefile
index b49da79f..328377d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 ifdef ROS_ROOT
 default: install
 include $(shell rospack find mk)/cmake.mk
-include $(shell rosstack find orocos_toolchain)/env.mk
-EXTRA_CMAKE_FLAGS=-DCMAKE_INSTALL_PREFIX=`rosstack find orocos_toolchain`/install -DBUILD_TESTING=OFF
+include $(shell rospack find rtt)/../env.mk
+EXTRA_CMAKE_FLAGS=-DCMAKE_INSTALL_PREFIX=`rospack find rtt`/../install -DBUILD_TESTING=OFF
 install: all
 	cd build; ${MAKE} install
 else