diff --git a/regress/agent-ptrace.sh b/regress/agent-ptrace.sh
index feef52416..df55b34a5 100644
--- a/regress/agent-ptrace.sh
+++ b/regress/agent-ptrace.sh
@@ -38,6 +38,7 @@ else
 	$SUDO chown 0 ${SSHAGENT}
 	$SUDO chgrp 0 ${SSHAGENT}
 	$SUDO chmod 2755 ${SSHAGENT}
+	trap "$SUDO chown ${USER} ${SSHAGENT}; $SUDO chmod 755 ${SSHAGENT}" 0
 fi
 
 trace "start agent"