diff --git a/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm b/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
index f124b9cc73..64c9587454 100644
--- a/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
+++ b/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
@@ -866,9 +866,14 @@ public:
 
     //==============================================================================
     // When parameters are discrete we need to use integer values.
-    float getMaximumParameterValue (AudioProcessorParameter* param)
+    float getMaximumParameterValue (AudioProcessorParameter* juceParam)
     {
-        return param->isDiscrete() && (! forceUseLegacyParamIDs) ? (float) (param->getNumSteps() - 1) : 1.0f;
+       #if JUCE_FORCE_LEGACY_PARAMETER_AUTOMATION_TYPE
+        ignoreUnused (juceParam);
+        return 1.0f;
+       #else
+        return juceParam->isDiscrete() ? (float) (juceParam->getNumSteps() - 1) : 1.0f;
+       #endif
     }
 
     ComponentResult GetParameterInfo (AudioUnitScope inScope,