diff --git a/test/mjsunit/maglev/osr-from-ml-to-tf.js b/test/mjsunit/maglev/osr-from-ml-to-tf.js
index b3a1fcbefe..18c5927c08 100644
--- a/test/mjsunit/maglev/osr-from-ml-to-tf.js
+++ b/test/mjsunit/maglev/osr-from-ml-to-tf.js
@@ -4,6 +4,10 @@
 //
 // Flags: --allow-natives-syntax --maglev --no-stress-opt
 // Flags: --no-baseline-batch-compilation --use-osr --turbofan
+//
+// Disable small-function TF optimization to avoid flakes that unexpectedly
+// tier up `f` before we get a chance to enter the OSR loop.
+// Flags: --max-bytecode-size-for-early-opt=0
 
 let keep_going = 10000000;  // A counter to avoid test hangs on failure.
 let i;  // The loop counter for the test function.