diff --git a/src/io/io.go b/src/io/io.go
index 1a2eb5d1e6..2590dd96b0 100644
--- a/src/io/io.go
+++ b/src/io/io.go
@@ -149,7 +149,8 @@ type ReadSeeker interface {
 	Seeker
 }
 
-// ReadSeekCloser is the interface that groups the basic Read, Seek and Close methods.
+// ReadSeekCloser is the interface that groups the basic Read, Seek and Close
+// methods.
 type ReadSeekCloser interface {
 	Reader
 	Seeker