diff --git a/src/vst3/SurgeVst3Processor.cpp b/src/vst3/SurgeVst3Processor.cpp
index 1d95c9ccce2..50a565f20b3 100644
--- a/src/vst3/SurgeVst3Processor.cpp
+++ b/src/vst3/SurgeVst3Processor.cpp
@@ -68,7 +68,7 @@ tresult PLUGIN_API SurgeVst3Processor::initialize(FUnknown* context)
 
    //---create Audio In/Out busses------
    // we want a stereo Input and a Stereo Output
-   addAudioInput(STR16("Stereo In"), SpeakerArr::kStereo);
+   addAudioInput(STR16("Stereo In"), SpeakerArr::kStereo, kAux );
    addAudioOutput(STR16("Stereo Out"), SpeakerArr::kStereo);
 
    //---create Event In/Out busses (1 bus with 16 channels)------