diff --git a/gns3server/compute/base_node.py b/gns3server/compute/base_node.py
index 5f1ba36a..47640cf6 100644
--- a/gns3server/compute/base_node.py
+++ b/gns3server/compute/base_node.py
@@ -602,11 +602,11 @@ class BaseNode:
         """
         yield from self._ubridge_send('bridge reset_packet_filters ' + bridge_name)
         i = 0
-        for (type, values) in filters.items():
+        for (filter_type, values) in filters.items():
             cmd = "bridge add_packet_filter {bridge_name} {filter_name} {filter_type} {filter_value}".format(
                 bridge_name=bridge_name,
                 filter_name="filter" + str(i),
-                filter_type=type,
+                filter_type=filter_type,
                 filter_value=" ".join([str(v) for v in values]))
             yield from self._ubridge_send(cmd)
             i += 1
diff --git a/gns3server/compute/vpcs/vpcs_vm.py b/gns3server/compute/vpcs/vpcs_vm.py
index 91f7c677..8de816aa 100644
--- a/gns3server/compute/vpcs/vpcs_vm.py
+++ b/gns3server/compute/vpcs/vpcs_vm.py
@@ -381,7 +381,7 @@ class VPCSVM(BaseNode):
         if self.ubridge:
             yield from self._add_ubridge_udp_connection("VPCS-{}".format(self._id), self._local_udp_tunnel[1], nio)
         elif self.is_running():
-            raise VPCSError("Sorry, adding a link to a started VPCS instance is not supported without using uBridge.")
+            raise VPCSError("Sorry, updating a link to a started VPCS instance is not supported without using uBridge.")
 
         self._ethernet_adapter.add_nio(port_number, nio)
         log.info('VPCS "{name}" [{id}]: {nio} added to port {port_number}'.format(name=self._name,
diff --git a/gns3server/controller/link.py b/gns3server/controller/link.py
index b36b30cb..585a7e7e 100644
--- a/gns3server/controller/link.py
+++ b/gns3server/controller/link.py
@@ -75,7 +75,7 @@ FILTERS = [
     {
         "type": "corrupt",
         "name": "Corrupt",
-        "description": "The percentage represents the chance for a packet to be corrupt",
+        "description": "The percentage represents the chance for a packet to be corrupted",
         "parameters": [
             {
                 "name": "Frequency",