diff --git a/src/audio/abstract.cpp b/src/audio/abstract.cpp
index e44fdf7e..942e3143 100644
--- a/src/audio/abstract.cpp
+++ b/src/audio/abstract.cpp
@@ -92,10 +92,12 @@ bool TAMidiOut::closeDevice() {
 }
 
 std::vector<String> TAMidiIn::listDevices() {
+  logW("attempting to list devices of abstract TAMidiIn!");
   return std::vector<String>();
 }
 
 std::vector<String> TAMidiOut::listDevices() {
+  logW("attempting to list devices of abstract TAMidiOut!");
   return std::vector<String>();
 }
 
diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index 0812535c..8ce31a60 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -3025,6 +3025,8 @@ bool DivEngine::initAudioBackend() {
       if (!output->midiIn->openDevice(inName)) {
         logW("could not open MIDI input device!");
       }
+    } else {
+      logV("no MIDI input device selected.");
     }
   }
   if (output->midiOut) {
@@ -3035,6 +3037,8 @@ bool DivEngine::initAudioBackend() {
       if (!output->midiOut->openDevice(outName)) {
         logW("could not open MIDI output device!");
       }
+    } else {
+      logV("no MIDI output device selected.");
     }
   }