diff --git a/tools/pio_upload_port.py b/tools/pio_upload_port.py
index 0e94c81..43c9e25 100644
--- a/tools/pio_upload_port.py
+++ b/tools/pio_upload_port.py
@@ -52,7 +52,7 @@ def query_id(port, timeout=5):
         deadline = time.time() + timeout
         while time.time() < deadline:
             line = ser.readline().decode("utf-8", errors="ignore").strip()
-            if line:
+            if "SylDa_Server" in line or "SylDa_Client" in line:
                 ser.close()
                 return line
         ser.close()