diff --git a/src/cmd/go/testdata/script/mod_clean_cache.txt b/src/cmd/go/testdata/script/mod_clean_cache.txt
index ed6602ad15..66a0e9ea7e 100644
--- a/src/cmd/go/testdata/script/mod_clean_cache.txt
+++ b/src/cmd/go/testdata/script/mod_clean_cache.txt
@@ -6,7 +6,7 @@ exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.0.mod
 exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.0.zip
 
 go clean -modcache -n
-stdout '^rm -rf .*/pkg/mod$'
+stdout '^rm -rf .*pkg.mod$'
 exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.0.info
 exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.0.mod
 exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.0.zip