diff --git a/port/linux/.vscode/launch.json b/port/linux/.vscode/launch.json
index 37e32d0db..173754d96 100644
--- a/port/linux/.vscode/launch.json
+++ b/port/linux/.vscode/launch.json
@@ -11,7 +11,7 @@
             "program": "${workspaceFolder}/build/test/pikascript_test",
             // "program": "${workspaceFolder}/build/boot/demo06-pikamain/pikascript_demo06-pikamain",
             "args": [
-                // "--gtest_filter=stddata.list_str"
+                "--gtest_filter=vm.super_val_"
             ],
             "stopAtEntry": false,
             "cwd": "${workspaceFolder}",
diff --git a/port/linux/package/pikascript/modbus.py b/port/linux/package/pikascript/modbus.py
index bb963a6af..078036c73 100644
--- a/port/linux/package/pikascript/modbus.py
+++ b/port/linux/package/pikascript/modbus.py
@@ -52,8 +52,7 @@ class ModBus(_modbus._ModBus):
 
     def deserializeReadRegisters(self, msg: bytes) -> list:
         self.readBuff = msg
-        length = len(msg)
-        dest = super().deserializeReadRegisters(length)
+        dest = super().deserializeReadRegisters(len(msg))
         ret = []
         for i in range(0, len(dest), 2):
             ret.append(int(dest[i]) + int(dest[i + 1]) * 256)
diff --git a/port/linux/test/VM-test.cpp b/port/linux/test/VM-test.cpp
index f61e1d97a..6d5bbe4e1 100644
--- a/port/linux/test/VM-test.cpp
+++ b/port/linux/test/VM-test.cpp
@@ -1527,6 +1527,7 @@ TEST(vm, super_val_) {
     char* t2_a = obj_getStr(pikaMain, "t2.a");
     /* assert */
     EXPECT_EQ(t1_a, 1);
+    EXPECT_STREQ(t2_a, "1");
     /* deinit */
     obj_deinit(pikaMain);
     EXPECT_EQ(pikaMemNow(), 0);
diff --git a/src/PikaVM.c b/src/PikaVM.c
index 3e3e0c18f..0fa579fe5 100644
--- a/src/PikaVM.c
+++ b/src/PikaVM.c
@@ -1051,6 +1051,7 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self,
     if (strEqu(run_path, "super")) {
         run_path = _find_super_class_name(vm);
         vm->in_super = PIKA_TRUE;
+        vm->super_invoke_deepth = VMState_getInvokeDeepthNow(vm);
         skip_init = PIKA_TRUE;
     }
 #endif
@@ -1061,13 +1062,6 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self,
         goto exit;
     }
 
-#if !PIKA_NANO_ENABLE
-    if (!skip_init && vm->in_super) {
-        vm->in_super = PIKA_FALSE;
-        obj_this = obj_getPtr(vm->locals, _find_self_name(vm));
-    }
-#endif
-
     /* get method host obj from reg */
     if (NULL == method_host && _checkLReg(run_path)) {
         uint8_t reg_index = _getLRegIndex(run_path);
@@ -1120,6 +1114,14 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self,
         goto exit;
     }
 
+#if !PIKA_NANO_ENABLE
+    if (!skip_init && vm->in_super &&
+        VMState_getInvokeDeepthNow(vm) == vm->super_invoke_deepth - 1) {
+        vm->in_super = PIKA_FALSE;
+        obj_this = obj_getPtr(vm->locals, _find_self_name(vm));
+    }
+#endif
+
     /* get object this */
     if (NULL == obj_this) {
         obj_this = method_host;
@@ -2664,11 +2666,11 @@ void VMState_solveUnusedStack(VMState* vm) {
             char* res = obj_toStr(arg_getPtr(arg));
             __platform_printf("%s\r\n", res);
         } else if (type == ARG_TYPE_INT) {
-            #if PIKA_PRINT_LLD_ENABLE
+#if PIKA_PRINT_LLD_ENABLE
             __platform_printf("%lld\r\n", arg_getInt(arg));
-            #else
+#else
             __platform_printf("%d\r\n", (int)arg_getInt(arg));
-            #endif
+#endif
         } else if (type == ARG_TYPE_FLOAT) {
             __platform_printf("%f\r\n", arg_getFloat(arg));
         } else if (type == ARG_TYPE_STRING) {
@@ -2706,6 +2708,7 @@ static VMParameters* __pikaVM_runByteCodeFrameWithState(
         .run_state = run_state,
         .ins_cnt = 0,
         .in_super = PIKA_FALSE,
+        .super_invoke_deepth = 0,
     };
     stack_init(&(vm.stack));
     VMState_initReg(&vm);
diff --git a/src/PikaVM.h b/src/PikaVM.h
index 429ab18fb..21648e8dc 100644
--- a/src/PikaVM.h
+++ b/src/PikaVM.h
@@ -77,6 +77,7 @@ struct VMState {
     uint8_t try_error_code;
     uint32_t ins_cnt;
     PIKA_BOOL in_super;
+    uint8_t super_invoke_deepth;
     PikaObj* lreg[PIKA_REGIST_SIZE];
     PIKA_BOOL ireg[PIKA_REGIST_SIZE];
     RunState* run_state;