diff --git a/c_os/user/CoroutineLoop.cc b/c_os/user/CoroutineLoop.cc
index 8318dac..58d4972 100755
--- a/c_os/user/CoroutineLoop.cc
+++ b/c_os/user/CoroutineLoop.cc
@@ -25,7 +25,7 @@ void CoroutineLoop::run() {
 
     int i = 0;
     while (true) {
-        kout.setpos(0, 21 + this->id);
+        kout.setpos(50, this->id);
         kout << "Corout[" << this->id << "]: " << i++ << endl;
 
         this->switchToNext();