diff --git a/ground/gcs/src/plugins/config/inputchannelform.cpp b/ground/gcs/src/plugins/config/inputchannelform.cpp
index 962bb7006..3f5ed7956 100644
--- a/ground/gcs/src/plugins/config/inputchannelform.cpp
+++ b/ground/gcs/src/plugins/config/inputchannelform.cpp
@@ -161,6 +161,10 @@ void InputChannelForm::groupUpdated()
     case ManualControlSettings::CHANNELGROUPS_SRXL:
         count = 16;
         break;
+    case ManualControlSettings::CHANNELGROUPS_HOTTMAINPORT:
+    case ManualControlSettings::CHANNELGROUPS_HOTTFLEXIPORT:
+        count = 32;
+        break;
     case ManualControlSettings::CHANNELGROUPS_GCS:
         count = GCSReceiver::CHANNEL_NUMELEM;
         break;