--- src/audio/SDL_audio.c	2018-09-02 12:38:34.344710100 +0300
+++ src/audio/SDL_audio.c	2018-09-02 12:16:05.001633700 +0300
@@ -610,11 +610,9 @@
     }
 
     /* Nothing to do unless we're set up for queueing. */
-    if (device->callbackspec.callback == SDL_BufferQueueDrainCallback) {
-        current_audio.impl.LockDevice(device);
-        retval = ((Uint32) SDL_CountDataQueue(device->buffer_queue)) + current_audio.impl.GetPendingBytes(device);
-        current_audio.impl.UnlockDevice(device);
-    } else if (device->callbackspec.callback == SDL_BufferQueueFillCallback) {
+    if (device->callbackspec.callback == SDL_BufferQueueDrainCallback ||
+        device->callbackspec.callback == SDL_BufferQueueFillCallback)
+    {
         current_audio.impl.LockDevice(device);
         retval = (Uint32) SDL_CountDataQueue(device->buffer_queue);
         current_audio.impl.UnlockDevice(device);