diff --git a/selftests/signedoff-check.sh b/selftests/signedoff-check.sh
index a904c61b80aa9e297797f562040ca79645c6c758..0afa914c6d47420045330b9abcd6e774022d36fc 100755
--- a/selftests/signedoff-check.sh
+++ b/selftests/signedoff-check.sh
@@ -1,7 +1,7 @@
 #!/bin/sh -e
 
-AUTHOR="$(git log -1 --pretty='format:%aN <%aE>')"
-git log -1 --pretty=format:%B | grep "Signed-off-by: $AUTHOR"
+AUTHOR="$(git log --no-merges -1 --pretty='format:%aN <%aE>')"
+git log --no-merges -1 --pretty=format:%B | grep "Signed-off-by: $AUTHOR"
 if [ $? != 0 ]; then
     echo "The commit message does not contain author's signature (Signed-off-by: $AUTHOR)"
     return 1