diff --git a/pkg/exchange/okex/stream.go b/pkg/exchange/okex/stream.go
index 971b2f4ca..867142e82 100644
--- a/pkg/exchange/okex/stream.go
+++ b/pkg/exchange/okex/stream.go
@@ -335,7 +335,7 @@ func (s *Stream) read(ctx context.Context) {
 					s.EmitEvent(*et)
 
 				case *BookData:
-					//there's "books" for 400 depth and books5 for 5 depth
+					// there's "books" for 400 depth and books5 for 5 depth
 					if et.channel != "books5" {
 						s.EmitBookData(*et)
 					}