diff --git a/include/pocketpy/vm.h b/include/pocketpy/vm.h
index b6520a5c..56792496 100644
--- a/include/pocketpy/vm.h
+++ b/include/pocketpy/vm.h
@@ -29,6 +29,7 @@ namespace pkpy{
 
 typedef PyObject* (*BinaryFuncC)(VM*, PyObject*, PyObject*);
 
+#if PK_ENABLE_PROFILER
 struct NextBreakpoint{
     int callstack_size;
     int lineno;
@@ -38,6 +39,7 @@ struct NextBreakpoint{
     void _step(VM* vm);
     bool empty() const { return callstack_size == 0; }
 };
+#endif
 
 struct PyTypeInfo{
     PyObject* obj;      // never be garbage collected
diff --git a/src/vm.cpp b/src/vm.cpp
index fb592d06..61d88569 100644
--- a/src/vm.cpp
+++ b/src/vm.cpp
@@ -598,7 +598,7 @@ Str VM::disassemble(CodeObject_ co){
 
     pod_vector<int> jumpTargets;
     for(auto byte : co->codes){
-        if(byte.op == OP_JUMP_ABSOLUTE || byte.op == OP_POP_JUMP_IF_FALSE || byte.op == OP_SHORTCUT_IF_FALSE_OR_POP){
+        if(byte.op == OP_JUMP_ABSOLUTE || byte.op == OP_POP_JUMP_IF_FALSE || byte.op == OP_SHORTCUT_IF_FALSE_OR_POP || byte.op == OP_LOOP_CONTINUE){
             jumpTargets.push_back(byte.arg);
         }
         if(byte.op == OP_GOTO){
@@ -1419,6 +1419,7 @@ void NativeFunc::check_size(VM* vm, ArgsView args) const{
     }
 }
 
+#if PK_ENABLE_PROFILER
 void NextBreakpoint::_step(VM* vm){
     int curr_callstack_size = vm->callstack.size();
     int curr_lineno = vm->top_frame()->curr_lineno();
@@ -1435,6 +1436,7 @@ void NextBreakpoint::_step(VM* vm){
         }
     }
 }
+#endif
 
 void VM::_breakpoint(){
 #if PK_ENABLE_PROFILER