diff --git a/src/cmd/go/alldocs.go b/src/cmd/go/alldocs.go
index 6832203f35..fa0d57f16b 100644
--- a/src/cmd/go/alldocs.go
+++ b/src/cmd/go/alldocs.go
@@ -579,7 +579,7 @@
 //
 // Usage:
 //
-// 	go list [-deps] [-e] [-f format] [-json] [build flags] [packages]
+// 	go list [-deps] [-e] [-f format] [-json] [-test] [build flags] [packages]
 //
 // List lists the packages named by the import paths, one per line.
 //
diff --git a/src/cmd/go/internal/list/list.go b/src/cmd/go/internal/list/list.go
index 2747706806..4cd9846ce4 100644
--- a/src/cmd/go/internal/list/list.go
+++ b/src/cmd/go/internal/list/list.go
@@ -23,7 +23,7 @@ import (
 )
 
 var CmdList = &base.Command{
-	UsageLine: "list [-deps] [-e] [-f format] [-json] [build flags] [packages]",
+	UsageLine: "list [-deps] [-e] [-f format] [-json] [-test] [build flags] [packages]",
 	Short:     "list packages",
 	Long: `
 List lists the packages named by the import paths, one per line.