diff --git a/servers/audio/audio_rb_resampler.h b/servers/audio/audio_rb_resampler.h
index d7e373178fa..cecae07d8be 100644
--- a/servers/audio/audio_rb_resampler.h
+++ b/servers/audio/audio_rb_resampler.h
@@ -86,7 +86,7 @@ public:
 		} else if (w < r) {
 			space = r - w - 1;
 		} else {
-			space = rb_len - w + r - 1;
+			space = (rb_len - w) + (r - 1);
 		}
 
 		return space;