diff --git a/src/vm/llvm/vm_tgc5c.cpp b/src/vm/llvm/vm_tgc5c.cpp
index b928011..1aafb8b 100644
--- a/src/vm/llvm/vm_tgc5c.cpp
+++ b/src/vm/llvm/vm_tgc5c.cpp
@@ -2553,7 +2553,11 @@ private:
         
         this->gen_instr_prologue();
         /*generate behavior*/
-        this->gen_wait(1);
+        auto wait_arg0 = this->gen_const(8,1);
+        std::vector<Value*> wait_args{
+            wait_arg0
+        };
+        this->builder.CreateCall(this->mod->getFunction("wait"), wait_args);
         bb = BasicBlock::Create(this->mod->getContext(), "entry", this->func, this->leave_blk);
         auto returnValue = std::make_tuple(CONT,bb);