diff --git a/odoo/tests/common.py b/odoo/tests/common.py
index d45c55d8546..c08714cf449 100644
--- a/odoo/tests/common.py
+++ b/odoo/tests/common.py
@@ -913,7 +913,7 @@ class ChromeBrowser:
             port_file = pathlib.Path(self.user_data_dir, 'DevToolsActivePort')
             for _ in range(100):
                 time.sleep(0.1)
-                if port_file.is_file():
+                if port_file.is_file() and port_file.stat().st_size > 5:
                     with port_file.open('r', encoding='utf-8') as f:
                         self.devtools_port = int(f.readline())
                     break