diff --git a/gns3server/controller/ports/port.py b/gns3server/controller/ports/port.py
index e0a0406ba..9d45cbda1 100644
--- a/gns3server/controller/ports/port.py
+++ b/gns3server/controller/ports/port.py
@@ -83,9 +83,9 @@ class Port:
         # If port name format has changed we use the port name as the short name (1.X behavior)
         if self._short_name:
             return self._short_name
-        elif "/" in self._name:
+        elif self._name and "/" in self._name:
             return self._name.replace(self.long_name_type(), self.short_name_type())
-        elif self._name.startswith(f"{self.long_name_type()}{self._interface_number}"):
+        elif self._name and self._name.startswith(f"{self.long_name_type()}{self._interface_number}"):
             return self.short_name_type() + f"{self._interface_number}"
         return self._name