diff --git a/protocols/hybrid.py b/protocols/hybrid.py
index 88f328b..829e0fb 100644
--- a/protocols/hybrid.py
+++ b/protocols/hybrid.py
@@ -14,6 +14,7 @@ class HybridProtocol(TS6Protocol):
         self.caps = {}
         self.hook_map = {'EOB': 'ENDBURST', 'TBURST': 'TOPIC', 'SJOIN': 'JOIN'}
         self.has_eob = False
+        self.protocol_caps -= {'slash-in-hosts'}
 
     def connect(self):
         """Initializes a connection to a server."""
diff --git a/protocols/ratbox.py b/protocols/ratbox.py
index c9fb979..419087d 100644
--- a/protocols/ratbox.py
+++ b/protocols/ratbox.py
@@ -13,6 +13,7 @@ class RatboxProtocol(TS6Protocol):
         self.required_caps.discard('EUID')
 
         self.hook_map['LOGIN'] = 'CLIENT_SERVICES_LOGIN'
+        self.protocol_caps -= {'slash-in-hosts'}
 
     def connect(self):
         """Initializes a connection to a server."""