diff --git a/audio/audio.go b/audio/audio.go
index 3f75ad17b..625c8e47c 100644
--- a/audio/audio.go
+++ b/audio/audio.go
@@ -256,7 +256,7 @@ func (c *Context) loop() {
 		c.m.Unlock()
 
 		const n = 4096
-		if _, err = io.CopyN(p, c.players, n); err != nil {
+		if _, err := io.CopyN(p, c.players, n); err != nil {
 			audiobinding.SetError(err)
 			return
 		}