diff --git a/src/audio/SDL_sysaudio.h b/src/audio/SDL_sysaudio.h
index 6995fbe102..2a034b5c85 100644
--- a/src/audio/SDL_sysaudio.h
+++ b/src/audio/SDL_sysaudio.h
@@ -231,7 +231,7 @@ struct SDL_AudioDevice
 
     // The device's current audio specification
     SDL_AudioSpec spec;
-    Uint32 buffer_size;
+    int buffer_size;
 
     // The device's default audio specification
     SDL_AudioSpec default_spec;