diff --git a/include/eosio/vm/types.hpp b/include/eosio/vm/types.hpp
index fad99f9..d301424 100644
--- a/include/eosio/vm/types.hpp
+++ b/include/eosio/vm/types.hpp
@@ -337,8 +337,14 @@ namespace eosio { namespace vm {
       template<typename Imports>
       static uint32_t get_imported_functions_size_impl(const Imports& imports) {
          uint32_t number_of_imports = 0;
-         for (uint32_t i = 0; i < imports.size(); i++) {
-            if (imports[i].kind == external_kind::Function)
+         const auto sz = imports.size();
+         // we don't want to use `imports[i]` or `imports.at(i)` since these do an unnecessary check
+         // `EOS_VM_ASSERT(i < _size)`. The check is unnecessary since we iterate from `0` to `_size`.
+         // So get the pointer to the first element and dereference it directly.
+         // ------------------------------------------------------------------------------------------------
+         const auto data = imports.data();
+         for (uint32_t i = 0; i < sz; i++) {
+            if (data[i].kind == external_kind::Function)
                number_of_imports++;
          }
          return number_of_imports;
diff --git a/include/eosio/vm/wasm_stack.hpp b/include/eosio/vm/wasm_stack.hpp
index da16153..6ed5d0a 100644
--- a/include/eosio/vm/wasm_stack.hpp
+++ b/include/eosio/vm/wasm_stack.hpp
@@ -34,7 +34,7 @@ namespace eosio { namespace vm {
             if (_index >= _store.size())
                _store.resize(_store.size()*2);
          }
-         _store[_index++] = std::forward<ElemT>(e);
+         _store[_index++] = std::move(e);
       }
 
       ElemT pop() { return _store[--_index]; }