diff --git a/Mk/bsd.port.mk b/Mk/bsd.port.mk
--- a/Mk/bsd.port.mk
+++ b/Mk/bsd.port.mk
@@ -4085,6 +4085,7 @@
 	for dir in $${recursive_dirs}; do \
 		unset flavor; \
 		case $${dir} in \
+			*@*/*) ;; \
 			*@*) \
 				flavor=$${dir\#*@}; \
 				dir=$${dir%@*}; \