diff --git a/kclvm/sema/src/resolver/node.rs b/kclvm/sema/src/resolver/node.rs
index acb9e03a8..8264e71af 100644
--- a/kclvm/sema/src/resolver/node.rs
+++ b/kclvm/sema/src/resolver/node.rs
@@ -912,12 +912,14 @@ impl<'ctx> MutSelfTypedResultWalker<'ctx> for Resolver<'ctx> {
             }
             TypeKind::Schema(schema_ty) => {
                 if !schema_ty.is_instance {
-                    let ty_annotation_str = ty_str_replace_pkgpath(
-                        &def_ty.into_type_annotation_str(),
-                        &self.ctx.pkgpath,
-                    );
                     let name = schema_expr.name.node.get_name();
-                    self.add_type_alias(&name, &ty_annotation_str);
+                    if !self.ctx.local_vars.contains(&name) {
+                        let ty_annotation_str = ty_str_replace_pkgpath(
+                            &def_ty.into_type_annotation_str(),
+                            &self.ctx.pkgpath,
+                        );
+                        self.add_type_alias(&name, &ty_annotation_str);
+                    }
                 }
                 let obj = self.new_config_expr_context_item(
                     &schema_ty.name,
diff --git a/test/grammar/schema/union/list/schema_2/kcl.mod b/test/grammar/schema/union/list/schema_2/kcl.mod
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/grammar/schema/union/list/schema_2/main.k b/test/grammar/schema/union/list/schema_2/main.k
new file mode 100644
index 000000000..a7fe98f48
--- /dev/null
+++ b/test/grammar/schema/union/list/schema_2/main.k
@@ -0,0 +1,7 @@
+import temp
+
+schema FinalSchema:
+    _values: [temp.MySchema] = [{id: "hello"},{ id: "world" },{}]
+    finalValues: [temp.MySchema] = [v {someField = i} for i, v in _values]
+
+f = FinalSchema{}
diff --git a/test/grammar/schema/union/list/schema_2/stdout.golden b/test/grammar/schema/union/list/schema_2/stdout.golden
new file mode 100644
index 000000000..f37a90499
--- /dev/null
+++ b/test/grammar/schema/union/list/schema_2/stdout.golden
@@ -0,0 +1,8 @@
+f:
+  finalValues:
+  - id: hello
+    someField: 0
+  - id: world
+    someField: 1
+  - id: id
+    someField: 2
diff --git a/test/grammar/schema/union/list/schema_2/temp/temp.k b/test/grammar/schema/union/list/schema_2/temp/temp.k
new file mode 100644
index 000000000..fa8c94cd4
--- /dev/null
+++ b/test/grammar/schema/union/list/schema_2/temp/temp.k
@@ -0,0 +1,3 @@
+schema MySchema:
+    id: str = "id"
+    someField?: int