Index: Mk/bsd.port.mk
===================================================================
--- Mk/bsd.port.mk
+++ Mk/bsd.port.mk
@@ -3909,7 +3909,8 @@
 # checksum and sizes checks.
 makesum: check-sanity
 	@cd ${.CURDIR} && ${MAKE} fetch NO_CHECKSUM=yes \
-			DISABLE_SIZE=yes DISTFILES="${DISTFILES}"
+			DISABLE_SIZE=yes DISTFILES="${DISTFILES}" \
+			MASTER_SITES="${MASTER_SITES}"
 	@${SETENV} \
 			${_CHECKSUM_INIT_ENV} \
 			dp_CHECKSUM_ALGORITHMS='${CHECKSUM_ALGORITHMS:tu}' \