diff --git a/modules/gdscript/gdscript_byte_codegen.cpp b/modules/gdscript/gdscript_byte_codegen.cpp
index 7a6fcc92a0..1b5da0eac1 100644
--- a/modules/gdscript/gdscript_byte_codegen.cpp
+++ b/modules/gdscript/gdscript_byte_codegen.cpp
@@ -189,7 +189,7 @@ GDScriptFunction *GDScriptByteCodeGenerator::write_end() {
 			opcodes.write[temporaries[i].bytecode_indices[j]] = stack_index | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
 		}
 		if (temporaries[i].type != Variant::NIL) {
-			function->temporary_slots[stack_index] = temporaries[i].type;
+			function->temporary_slots.push_back(Pair(stack_index, temporaries[i].type));
 		}
 	}
 
diff --git a/modules/gdscript/gdscript_function.h b/modules/gdscript/gdscript_function.h
index ee6f2515a9..8171a0f125 100644
--- a/modules/gdscript/gdscript_function.h
+++ b/modules/gdscript/gdscript_function.h
@@ -360,7 +360,7 @@ private:
 
 	SelfList<GDScriptFunction> function_list{ this };
 	mutable Variant nil;
-	HashMap<int, Variant::Type> temporary_slots;
+	TightLocalVector<Pair<int, Variant::Type>> temporary_slots;
 	List<StackDebug> stack_debug;
 
 	Vector<int> code;
diff --git a/modules/gdscript/gdscript_vm.cpp b/modules/gdscript/gdscript_vm.cpp
index 54c7da8463..6b8b0b6c2a 100644
--- a/modules/gdscript/gdscript_vm.cpp
+++ b/modules/gdscript/gdscript_vm.cpp
@@ -648,8 +648,8 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
 			instruction_args = nullptr;
 		}
 
-		for (const KeyValue<int, Variant::Type> &E : temporary_slots) {
-			type_init_function_table[E.value](&stack[E.key]);
+		for (const Pair<int, Variant::Type> &E : temporary_slots) {
+			type_init_function_table[E.second](&stack[E.first]);
 		}
 	}