diff --git a/src/cmd/go/testdata/script/list_std.txt b/src/cmd/go/testdata/script/list_std.txt
index 6ab1bd1..4a00e43 100644
--- a/src/cmd/go/testdata/script/list_std.txt
+++ b/src/cmd/go/testdata/script/list_std.txt
@@ -6,7 +6,7 @@ env GO111MODULE=off
 # Listing GOROOT should only find standard packages.
 cd $GOROOT/src
 go list -f '{{if not .Standard}}{{.ImportPath}}{{end}}' ./...
-! stdout .
+stdout _$GOROOT
 
 # Standard packages should include cmd, but not cmd/vendor.
 go list ./...
