diff --git a/.githooks/commit-msg b/.githooks/commit-msg
index 090c9cee..d4eecdce 100755
--- a/.githooks/commit-msg
+++ b/.githooks/commit-msg
@@ -1,9 +1,3 @@
 #!/bin/sh
 
 npx --no-install commitlint --edit $1
-
-test "" = "$(grep '^Signed-off-by: ' "$1" |
-	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
-	echo >&2 Duplicate Signed-off-by lines.
-	exit 1
-}