diff --git a/compiler/compiler-core.cpp b/compiler/compiler-core.cpp
index 56757a3ee8..2be235feb0 100644
--- a/compiler/compiler-core.cpp
+++ b/compiler/compiler-core.cpp
@@ -465,7 +465,7 @@ VarPtr CompilerCore::create_var(const std::string &name, VarData::Type type) {
 
 VarPtr CompilerCore::get_global_var(const std::string &name, VarData::Type type,
                                     VertexPtr init_val, bool *is_new_inserted) {
-  TSHashTable<VarPtr>::HTNode *node = global_vars_ht.at(vk::std_hash(name));
+  auto *node = global_vars_ht.at(vk::std_hash(name));
   VarPtr new_var;
   if (!node->data) {
     AutoLocker<Lockable *> locker(node);
diff --git a/compiler/compiler-core.h b/compiler/compiler-core.h
index 697fd8322f..4ef7072f5a 100644
--- a/compiler/compiler-core.h
+++ b/compiler/compiler-core.h
@@ -33,7 +33,7 @@ class CompilerCore {
   TSHashTable<FunctionPtr> functions_ht;
   TSHashTable<ClassPtr> classes_ht;
   TSHashTable<DefinePtr> defines_ht;
-  TSHashTable<VarPtr> global_vars_ht;
+  TSHashTable<VarPtr,2'000'000> global_vars_ht;
   TSHashTable<LibPtr, 1000> libs_ht;
   TSHashTable<ModulitePtr, 1000> modulites_ht;
   TSHashTable<ComposerJsonPtr, 1000> composer_json_ht;