diff --git a/refactor/rename/rename.go b/refactor/rename/rename.go
index 19b749e..3651c62 100644
--- a/refactor/rename/rename.go
+++ b/refactor/rename/rename.go
@@ -90,7 +90,7 @@
 the workspace ($GOROOT and $GOPATH).
 
 gorename rejects renamings of concrete methods that would change the
-assignability relation between types and interfaces.  If the interface
+assignability relation between types and interfaces. If the interface
 change was intentional, initiate the renaming at the interface method.
 
 gorename rejects any renaming that would create a conflict at the point