diff --git a/ch8/ch8-05.md b/ch8/ch8-05.md
index b932bed..03dd9ad 100644
--- a/ch8/ch8-05.md
+++ b/ch8/ch8-05.md
@@ -85,7 +85,7 @@ func makeThumbnails4(filenames []string) error {
 		go func(f string) {
 			_, err := thumbnail.ImageFile(f)
 			errors <- err
-		}(f)}
+		}(f)
 	}
 
 	for range filenames {