diff --git a/script/check-posix-pty b/script/check-posix-pty
index 1143ee864..5e3c26434 100755
--- a/script/check-posix-pty
+++ b/script/check-posix-pty
@@ -43,6 +43,8 @@ at_exit()
     sudo killall expect || true
     sudo killall ot-ctl || true
     sudo killall ot-daemon || true
+    sudo killall ot-cli || true
+    sudo killall ot-rcp || true
     sudo killall socat || true
 
     exit $EXIT_CODE