diff --git a/modules/juce_audio_devices/native/juce_android_OpenSL.cpp b/modules/juce_audio_devices/native/juce_android_OpenSL.cpp
index f86aa06162..2aaf23a16b 100644
--- a/modules/juce_audio_devices/native/juce_android_OpenSL.cpp
+++ b/modules/juce_audio_devices/native/juce_android_OpenSL.cpp
@@ -724,6 +724,7 @@ public:
     //==============================================================================
     OpenSLAudioIODevice (const String& deviceName)
         : AudioIODevice (deviceName, openSLTypeName),
+          actualBufferSize (0), sampleRate (0),
           audioProcessingEnabled (true),
           callback (nullptr)
     {