diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index 1e9c9d68adf0..dfb69d17001b 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -14,6 +14,8 @@
 # The file is partitioned: OLD_FILES first, then OLD_LIBS and OLD_DIRS last.
 #
 
+# 20100910: renamed sbuf_overflowed to sbuf_error
+OLD_FILES+=usr/share/man/man9/sbuf_overflowed.9.gz
 # 20100815: retired last traces of chooseproc(9)
 OLD_FILES+=usr/share/man/man9/chooseproc.9.gz
 # 20100806: removal of unused libcompat routines