diff --git a/tests/test_utils_opmsg.py b/tests/test_utils_opmsg.py
index 7e290517..cd094f74 100644
--- a/tests/test_utils_opmsg.py
+++ b/tests/test_utils_opmsg.py
@@ -60,6 +60,18 @@ def run_all_iocs():
     t.join(timeout=2.0)
     time.sleep(0.2)
 
+import socket
+
+for port in (5064, 5065):
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    try:
+        sock.bind(("127.0.0.1", port))
+        print(f"[OK] Port {port} libre")
+    except OSError as e:
+        print(f"[OCCUPÉ] Port {port} déjà utilisé: {e}")
+    finally:
+        sock.close()
+        
 
 '''
 # -------- OperationMessageStatus --------