diff --git a/src/audio/sdlAudio.cpp b/src/audio/sdlAudio.cpp
index 8f074a5aa..cf464e835 100644
--- a/src/audio/sdlAudio.cpp
+++ b/src/audio/sdlAudio.cpp
@@ -46,7 +46,9 @@ void* TAAudioSDL::getContext() {
 bool TAAudioSDL::quit() {
   if (!initialized) return false;
 
-  SDL_CloseAudioDevice(ai);
+  if (ai!=0) {
+    SDL_CloseAudioDevice(ai);
+  }
 
   if (running) {
     running=false;
diff --git a/src/audio/sdlAudio.h b/src/audio/sdlAudio.h
index b3b0a1843..b9c12fd20 100644
--- a/src/audio/sdlAudio.h
+++ b/src/audio/sdlAudio.h
@@ -34,5 +34,6 @@ class TAAudioSDL: public TAAudio {
     std::vector<String> listAudioDevices();
     bool init(TAAudioDesc& request, TAAudioDesc& response);
     TAAudioSDL():
+      ai(0),
       audioSysStarted(false) {}
 };