diff --git a/proxyflood.py b/proxyflood.py
index 89dcd44..a367ad4 100644
--- a/proxyflood.py
+++ b/proxyflood.py
@@ -165,7 +165,10 @@ def flood(sock):
 
             # code 500
             elif _split[1] == '500':
-                if 'too many join request' in recv.lower(): break
+                if 'too many join request' in recv.lower():
+                    time.sleep(3)
+                    sock.send('JOIN %s\r\n' % _split[3])
+
             # chan +i
             elif _split[1] == '473':
                 if is_target_protected is not None: break
@@ -175,6 +178,11 @@ def flood(sock):
                 config.flood.threads = 1
                 print('target is protected (+i), aborting')
                 break
+
+            # banned from chan
+            elif _split[1] == '404':
+                if 'banned' in recv.lower(): sock.send('KNOCK %s\r\n' % _split[3])
+
             # user or chan sets mode +R
             elif _split[1] == '477' or _split[1] == '531':
                 if not config.flood.register: