diff --git a/modules/juce_audio_processors/processors/juce_HostedAudioProcessorParameter.h b/modules/juce_audio_processors/processors/juce_HostedAudioProcessorParameter.h
index 0485808ddb..f72d160ca6 100644
--- a/modules/juce_audio_processors/processors/juce_HostedAudioProcessorParameter.h
+++ b/modules/juce_audio_processors/processors/juce_HostedAudioProcessorParameter.h
@@ -32,7 +32,7 @@ namespace juce
 
     @tags{Audio}
 */
-struct HostedAudioProcessorParameter : public AudioProcessorParameter
+struct JUCE_API  HostedAudioProcessorParameter : public AudioProcessorParameter
 {
     using AudioProcessorParameter::AudioProcessorParameter;