diff --git a/bin/9l b/bin/9l
index 5432fe41..2b1c5906 100755
--- a/bin/9l
+++ b/bin/9l
@@ -333,6 +333,8 @@ quiet()
 	ignore=$ignore'|is (often|almost always) misused'
 	ignore=$ignore'|is dangerous, better use'
 	ignore=$ignore'|text-based stub'
+	# macOS linker is incessant about reoccurring -l9, -lsec, -lthread:
+	ignore=$ignore'|ld: warning: ignoring duplicate libraries:'
 
 	sed 's/.*: In function `[^:]*: *//' "$1" |
 	egrep -v "$ignore"