diff --git a/src/pocketpy.h b/src/pocketpy.h
index 5cd31ffa..4f1599d0 100644
--- a/src/pocketpy.h
+++ b/src/pocketpy.h
@@ -1019,16 +1019,16 @@ inline void init_builtins(VM* _vm) {
 inline void add_module_time(VM* vm){
     PyObject* mod = vm->new_module("time");
     vm->bind_func<0>(mod, "time", [](VM* vm, ArgsView args) {
-        auto now = std::chrono::high_resolution_clock::now();
-        return VAR(std::chrono::duration_cast<std::chrono::microseconds>(now.time_since_epoch()).count() / 1000000.0);
+        auto now = std::chrono::system_clock::now();
+        return VAR(std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count() / 1000.0);
     });
 
     vm->bind_func<1>(mod, "sleep", [](VM* vm, ArgsView args) {
         f64 seconds = CAST_F(args[0]);
-        auto begin = std::chrono::high_resolution_clock::now();
+        auto begin = std::chrono::system_clock::now();
         while(true){
-            auto now = std::chrono::high_resolution_clock::now();
-            f64 elapsed = std::chrono::duration_cast<std::chrono::microseconds>(now - begin).count() / 1000000.0;
+            auto now = std::chrono::system_clock::now();
+            f64 elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - begin).count() / 1000.0;
             if(elapsed >= seconds) break;
         }
         return vm->None;
diff --git a/src/vm.h b/src/vm.h
index 1b9f3f98..ceca3e04 100644
--- a/src/vm.h
+++ b/src/vm.h
@@ -1156,9 +1156,9 @@ inline PyObject* VM::vectorcall(int ARGC, int KWARGC, bool op_call){
         if(args.size() < fn.argc){
             vm->TypeError(fmt(
                 "expected ",
-                fn.argc,
+                fn.argc - (int)method_call,
                 " positional arguments, but got ",
-                args.size(),
+                args.size() - (int)method_call,
                 " (", fn.decl->code->name, ')'
             ));
         }