Index: head/Mk/Uses/python.mk
===================================================================
--- head/Mk/Uses/python.mk
+++ head/Mk/Uses/python.mk
@@ -426,8 +426,8 @@
 .  else
 .    for _v in ${PYTHON3_DEFAULT} ${PYTHON2_DEFAULT} ${PYTHON_DEFAULT}
 _f=	py${_v:S/.//}
-.      if ${_ALL_PYTHON_FLAVORS:M${_f}} && !${FLAVORS:M${_f}}
-FLAVORS:=	${_f} ${FLAVORS}
+.      if ${_ALL_PYTHON_FLAVORS:M${_f}}
+FLAVORS:=	${_f} ${FLAVORS:N${_f}}
 .      endif
 .    endfor
 .  endif