diff --git a/src/pkg/time/zoneinfo.go b/src/pkg/time/zoneinfo.go
index 6e5b2efb76..a3c66d6e9d 100644
--- a/src/pkg/time/zoneinfo.go
+++ b/src/pkg/time/zoneinfo.go
@@ -11,7 +11,6 @@ package time
 
 import (
 	"io/ioutil"
-	"once"
 	"os"
 )