diff --git a/Source/MQTTnet.Extensions.ManagedClient/IManagedMqttClient.cs b/Source/MQTTnet.Extensions.ManagedClient/IManagedMqttClient.cs
index f814437f..968fe699 100644
--- a/Source/MQTTnet.Extensions.ManagedClient/IManagedMqttClient.cs
+++ b/Source/MQTTnet.Extensions.ManagedClient/IManagedMqttClient.cs
@@ -47,8 +47,8 @@ namespace MQTTnet.Extensions.ManagedClient
         
         Task StopAsync(bool cleanDisconnect = true);
         
-        Task SubscribeAsync(ICollection<MqttTopicFilter> topicFilters);
+        Task SubscribeAsync(IEnumerable<MqttTopicFilter> topicFilters);
         
-        Task UnsubscribeAsync(ICollection<string> topics);
+        Task UnsubscribeAsync(IEnumerable<string> topics);
     }
 }
\ No newline at end of file
diff --git a/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs b/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs
index 109eb69a..679f6929 100644
--- a/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs
+++ b/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs
@@ -288,7 +288,7 @@ namespace MQTTnet.Extensions.ManagedClient
             }
         }
 
-        public Task SubscribeAsync(ICollection<MqttTopicFilter> topicFilters)
+        public Task SubscribeAsync(IEnumerable<MqttTopicFilter> topicFilters)
         {
             ThrowIfDisposed();
 
@@ -316,7 +316,7 @@ namespace MQTTnet.Extensions.ManagedClient
             return CompletedTask.Instance;
         }
 
-        public Task UnsubscribeAsync(ICollection<string> topics)
+        public Task UnsubscribeAsync(IEnumerable<string> topics)
         {
             ThrowIfDisposed();