diff --git a/gns3server/compute/dynamips/nodes/bridge.py b/gns3server/compute/dynamips/nodes/bridge.py
index 4b76d2c7..b37ae5d8 100644
--- a/gns3server/compute/dynamips/nodes/bridge.py
+++ b/gns3server/compute/dynamips/nodes/bridge.py
@@ -103,8 +103,8 @@ class Bridge(Device):
 
         :param nio: NIO instance to remove
         """
-
-        yield from self._hypervisor.send('nio_bridge remove_nio "{name}" {nio}'.format(name=self._name, nio=nio))
+        if self._hypervisor:
+            yield from self._hypervisor.send('nio_bridge remove_nio "{name}" {nio}'.format(name=self._name, nio=nio))
         self._nios.remove(nio)
 
     @property