diff --git a/src/flags/flag-definitions.h b/src/flags/flag-definitions.h
index 7241181ae4..981af0b483 100644
--- a/src/flags/flag-definitions.h
+++ b/src/flags/flag-definitions.h
@@ -1979,6 +1979,12 @@ DEFINE_BOOL(
     "Fuzzers use this flag to signal that they are ... fuzzing. This causes "
     "intrinsics to fail silently (e.g. return undefined) on invalid usage.")
 
+// When fuzzing, always compile functions twice and ensure that the generated
+// bytecode is the same. This can help find bugs such as crbug.com/1394403 as it
+// avoids the need for bytecode aging to kick in to trigger the recomplication.
+DEFINE_WEAK_NEG_IMPLICATION(fuzzing, lazy)
+DEFINE_WEAK_IMPLICATION(fuzzing, stress_lazy_source_positions)
+
 #if defined(V8_OS_AIX) && defined(COMPONENT_BUILD)
 // FreezeFlags relies on mprotect() method, which does not work by default on
 // shared mem: https://www.ibm.com/docs/en/aix/7.2?topic=m-mprotect-subroutine
diff --git a/tools/clusterfuzz/trials/clusterfuzz_trials_config.json b/tools/clusterfuzz/trials/clusterfuzz_trials_config.json
index 1d800890e4..e4a8bf291c 100644
--- a/tools/clusterfuzz/trials/clusterfuzz_trials_config.json
+++ b/tools/clusterfuzz/trials/clusterfuzz_trials_config.json
@@ -37,5 +37,7 @@
     {"app_args": "--stress-scavenge=100", "app_name": "d8", "probability": 0.05},
     {"app_args": "--turbo-instruction-scheduling", "app_name": "d8", "probability": 0.1},
     {"app_args": "--turbo-stress-instruction-scheduling", "app_name": "d8", "probability": 0.1},
-    {"app_args": "--stress-wasm-code-gc", "app_name": "d8", "probability": 0.1}
+    {"app_args": "--stress-wasm-code-gc", "app_name": "d8", "probability": 0.1},
+    {"app_args": "--lazy", "app_name": "d8", "probability": 0.1},
+    {"app_args": "--no-stress-lazy-source-positions", "app_name": "d8", "probability": 0.1}
 ]