diff --git a/refactor/rename/rename.go b/refactor/rename/rename.go
index 526ee1e58b..be47701331 100644
--- a/refactor/rename/rename.go
+++ b/refactor/rename/rename.go
@@ -157,7 +157,7 @@ var (
 	Verbose bool
 )
 
-var stdout io.Writer
+var stdout io.Writer = os.Stdout
 
 type renamer struct {
 	iprog              *loader.Program
diff --git a/refactor/rename/rename14.go b/refactor/rename/rename14.go
index 1d95b7695c..e4ccc061ab 100644
--- a/refactor/rename/rename14.go
+++ b/refactor/rename/rename14.go
@@ -157,7 +157,7 @@ var (
 	Verbose bool
 )
 
-var stdout io.Writer
+var stdout io.Writer = os.Stdout
 
 type renamer struct {
 	iprog              *loader.Program