diff --git a/lib/tfw/networking/server/tfw_server.py b/lib/tfw/networking/server/tfw_server.py
index 252b79e..f7a55c0 100644
--- a/lib/tfw/networking/server/tfw_server.py
+++ b/lib/tfw/networking/server/tfw_server.py
@@ -60,11 +60,12 @@ class FSMManager:
             try: self.fsm.trigger(trigger, message=message)
             except AttributeError: log.debug('FSM failed to execute nonexistent trigger: "{}"'.format(trigger))
 
-    def subscribe_predicate(self, trigger, predicate):
-        self.trigger_predicates[trigger].append(predicate)
+    def subscribe_predicate(self, trigger, *predicates):
+        self.trigger_predicates[trigger].extend(predicates)
 
-    def unsubscribe_predicate(self, trigger, predicate):
-        self.trigger_predicates[trigger].remove(predicate)
+    def unsubscribe_predicate(self, trigger, *predicates):
+        self.trigger_predicates[trigger] = [predicate for predicate in self.trigger_predicates[trigger]
+                                            not in predicates]
 
 
 class FSMUpdater: