diff --git a/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp b/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp
index bdc935fc39..3eefda513b 100644
--- a/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp
+++ b/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp
@@ -2053,7 +2053,8 @@ private:
     String name;
     CriticalSection lock;
     std::atomic<bool> wantsMidiMessages { false };
-    bool initialised = false, isPowerOn = false;
+    bool initialised = false;
+    std::atomic<bool> isPowerOn { false };
     bool lastProcessBlockCallWasBypass = false, vstSupportsBypass = false;
     mutable StringArray programNames;
     AudioBuffer<float> outOfPlaceBuffer;
diff --git a/modules/juce_audio_processors/processors/juce_AudioProcessor.h b/modules/juce_audio_processors/processors/juce_AudioProcessor.h
index 836b09c7c9..28f79f5c6f 100644
--- a/modules/juce_audio_processors/processors/juce_AudioProcessor.h
+++ b/modules/juce_audio_processors/processors/juce_AudioProcessor.h
@@ -1466,7 +1466,8 @@ private:
     Component::SafePointer<AudioProcessorEditor> activeEditor;
     double currentSampleRate = 0;
     int blockSize = 0, latencySamples = 0;
-    bool suspended = false, nonRealtime = false;
+    bool suspended = false;
+    std::atomic<bool> nonRealtime { false };
     ProcessingPrecision processingPrecision = singlePrecision;
     CriticalSection callbackLock, listenerLock, activeEditorLock;