diff --git a/squinnondation/hazel.py b/squinnondation/hazel.py
index 4a1da53..958fa2d 100644
--- a/squinnondation/hazel.py
+++ b/squinnondation/hazel.py
@@ -193,9 +193,7 @@ class Squirrel(Hazelnut):
         hazelnut = self.find_hazelnut(addr[0], addr[1])
         if hazelnut.banned:
             # The client already sent errored packets
-            self.send_packet(hazelnut, Packet.construct(WarningTLV.construct(
-                "You got banned since you sent too much errored packets.")))
-            raise ValueError("Client is banned.")
+            return Packet.construct(), hazelnut
         try:
             pkt = Packet.unmarshal(data)
         except ValueError as error:
@@ -203,6 +201,10 @@ class Squirrel(Hazelnut):
             hazelnut.errors += 1
             self.send_packet(hazelnut, Packet.construct(WarningTLV.construct(
                 f"An error occured while reading your packet: {error}")))
+            if hazelnut.banned:
+                self.send_packet(hazelnut, Packet.construct(WarningTLV.construct(
+                    "You got banned since you sent too much errored packets.")))
+                raise ValueError("Client is banned since there were too many errors.", error)
             raise error
         else:
             return pkt, hazelnut
@@ -761,7 +763,13 @@ class Worm(Thread):
                 pkt, hazelnut = self.squirrel.receive_packet()
             except ValueError as error:
                 self.squirrel.add_system_message("An error occurred while receiving a packet: {}".format(error))
+                self.squirrel.refresh_history()
+                self.squirrel.refresh_input()
             else:
+                if hazelnut.banned:
+                    # Ignore banned hazelnuts
+                    continue
+
                 for tlv in pkt.body:
                     tlv.handle(self.squirrel, hazelnut)
                 self.squirrel.refresh_history()