diff --git a/src/cmd/go/testdata/script/mod_dir.txt b/src/cmd/go/testdata/script/mod_dir.txt
new file mode 100644
index 0000000000..05548f6366
--- /dev/null
+++ b/src/cmd/go/testdata/script/mod_dir.txt
@@ -0,0 +1,20 @@
+# The directory named go.mod should be ignored
+
+env GO111MODULE=on
+
+cd $WORK/sub
+
+go list .
+stdout 'x/sub'
+
+mkdir go.mod
+exists go.mod
+
+go list .
+stdout 'x/sub'
+
+-- $WORK/go.mod --
+module x
+
+-- $WORK/sub/x.go --
+package x
\ No newline at end of file