diff --git a/py-sot-core-v3/Makefile b/py-sot-core-v3/Makefile
index 664ddd858a67e17314c931e0a8e4df07790beb07..93cbcc24d2eac0137929c6afbda2b2b334cb40c1 100644
--- a/py-sot-core-v3/Makefile
+++ b/py-sot-core-v3/Makefile
@@ -22,6 +22,7 @@ CONFLICTS+=		py[0-9][0-9]-${NAME}
 
 CMAKE_ARGS+=		-DCMAKE_INSTALL_LIBDIR=lib
 CMAKE_ARGS+=		-DINSTALL_DOCUMENTATION=OFF
+CMAKE_ARGS+=		-DINSTALL_PYTHON_INTERFACE_ONLY=ON
 
 include ../../${CATEGORIES}/${NAME}-v3/depend.mk
 include ../../devel/boost-headers/depend.mk