diff --git a/include/tvm/runtime/container/array.h b/include/tvm/runtime/container/array.h
index 11bacb18e92c..1b735e73c386 100644
--- a/include/tvm/runtime/container/array.h
+++ b/include/tvm/runtime/container/array.h
@@ -325,6 +325,8 @@ class Array : public ObjectRef {
    */
   template <typename IterType>
   Array(IterType first, IterType last) {
+    static_assert(is_valid_iterator_v<T, IterType>,
+                  "IterType cannot be inserted into a tvm::Array<T>");
     Assign(first, last);
   }
 
@@ -481,6 +483,9 @@ class Array : public ObjectRef {
    */
   template <typename IterType>
   void insert(iterator position, IterType first, IterType last) {
+    static_assert(is_valid_iterator_v<T, IterType>,
+                  "IterType cannot be inserted into a tvm::Array<T>");
+
     if (first == last) {
       return;
     }
diff --git a/src/te/schedule/schedule_lang.cc b/src/te/schedule/schedule_lang.cc
index 0fcd6133c4a2..e8f4f65eb651 100644
--- a/src/te/schedule/schedule_lang.cc
+++ b/src/te/schedule/schedule_lang.cc
@@ -200,7 +200,7 @@ Stage& Stage::env_threads(Array<IterVar> threads) {
   ICHECK_EQ(self->env_threads.size(), 0U) << "Already set env_threads";
   Array<IterVar>& leaf_vars = self->leaf_iter_vars;
   Array<IterVar>& all_vars = self->all_iter_vars;
-  std::vector<ObjectRef> temp;
+  std::vector<IterVar> temp;
   for (IterVar iv : threads) {
     temp.push_back(iv);
   }