diff --git a/cmd/cue/cmd/testdata/script/vet_issue1926.txtar b/cmd/cue/cmd/testdata/script/vet_issue1926.txtar
new file mode 100644
index 00000000000..4831ae3bed3
--- /dev/null
+++ b/cmd/cue/cmd/testdata/script/vet_issue1926.txtar
@@ -0,0 +1,38 @@
+# https://cuelang.org/issues/1926
+
+exec cue export foo.cue dev.json
+exec cue vet    foo.cue dev.json
+
+exec cue export foo.cue prd.json
+exec cue vet    foo.cue prd.json
+
+-- foo.cue --
+package foo
+
+_env: =~"(prd)-"
+
+#Foo
+
+#Foo: {
+	env: "dev" | _env
+	baz: bool | *false
+
+	if env == "dev" {
+		_defaults.dev
+	}
+}
+
+_defaults: {
+	"dev": {
+		baz: true
+	}
+}
+
+-- prd.json --
+{
+	"env": "prd-foo"
+}
+-- dev.json --
+{
+	"env": "dev"
+}
\ No newline at end of file