Index: sys/conf/kern.post.mk
===================================================================
--- sys/conf/kern.post.mk
+++ sys/conf/kern.post.mk
@@ -421,6 +421,12 @@
 		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
 	    --redefine-sym \
 		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
+	    --redefine-sym \
+		_binary_${MFS_IMAGE:C,[^-/[:alnum:]],_,g}_size=__mfs_root_size \
+	    --redefine-sym \
+		_binary_${MFS_IMAGE:C,[^-/[:alnum:]],_,g}_start=mfs_root \
+	    --redefine-sym \
+		_binary_${MFS_IMAGE:C,[^-/[:alnum:]],_,g}_end=mfs_root_end \
 	    ${.TARGET}
 .endif
 .endif