diff --git a/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm b/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
index 36b9ad5eb4..bf9f60555b 100644
--- a/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
+++ b/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
@@ -1791,14 +1791,23 @@ private:
 
             default:
                 if (event.mArgument.mProperty.mPropertyID == kAudioUnitProperty_ParameterList)
+                {
+                    refreshParameterList();
                     updateHostDisplay();
+                }
                 else if (event.mArgument.mProperty.mPropertyID == kAudioUnitProperty_PresentPreset)
+                {
                     sendAllParametersChangedEvents();
+                }
                 else if (event.mArgument.mProperty.mPropertyID == kAudioUnitProperty_Latency)
+                {
                     updateLatency();
+                }
                 else if (event.mArgument.mProperty.mPropertyID == kAudioUnitProperty_BypassEffect)
+                {
                     if (bypassParam != nullptr)
                         bypassParam->setValueNotifyingHost (bypassParam->getValue());
+                }
 
                 break;
         }