diff -up VirtualBox-5.1.6/src/libs/xpcom18a4/python/Makefile.kmk.python VirtualBox-5.1.6/src/libs/xpcom18a4/python/Makefile.kmk --- VirtualBox-5.1.6/src/libs/xpcom18a4/python/Makefile.kmk.python 2016-09-12 18:20:10.000000000 +0200 +++ VirtualBox-5.1.6/src/libs/xpcom18a4/python/Makefile.kmk 2016-09-27 14:41:31.329030705 +0200 @@ -19,7 +19,7 @@ SUB_DEPTH = ../../../.. include $(KBUILD_PATH)/subheader.kmk ifdef VBOX_WITH_MULTIVERSION_PYTHON - VBOX_MULTIPYTHON = 1 + VBOX_MULTIPYTHON = $(VBOX_WITH_MULTIVERSION_PYTHON) else VBOX_MULTIPYTHON = 0 endif