diff --git a/src/v8/test/debugger/debug/debug-break-inline.js b/src/v8/test/debugger/debug/debug-break-inline.js
index 18574ec..1b23f3d 100644
--- a/src/v8/test/debugger/debug/debug-break-inline.js
+++ b/src/v8/test/debugger/debug/debug-break-inline.js
@@ -63,6 +63,7 @@
   debugger;
 }
 
+%PrepareFunctionForOptimization(f);
 f();f();f();
 %OptimizeFunctionOnNextCall(f);
 f();