diff --git a/runtime/tools/dartfuzz/flag_fuzzer.dart b/runtime/tools/dartfuzz/flag_fuzzer.dart
index c90ccd1d9a8..8ac1eca944e 100644
--- a/runtime/tools/dartfuzz/flag_fuzzer.dart
+++ b/runtime/tools/dartfuzz/flag_fuzzer.dart
@@ -21,6 +21,8 @@ final buildDirs = [
   "out/DebugSIMRISCV64",
 ];
 
+final alwaysFlags = ["--no-dds"];
+
 final profilerFlags = [
   "--profile_vm=true", // default is different for simulators
   "--profile_vm=false",
@@ -177,6 +179,7 @@ Future<void> test(
     commands = [
       [
         "$buildDir/dartvm",
+        ...alwaysFlags,
         ...someJitRuntimeFlags(),
         dartScript,
         ...dartArguments,
@@ -192,6 +195,7 @@ Future<void> test(
     commands = [
       [
         "out/ReleaseX64/dartvm",
+        ...alwaysFlags,
         "pkg/vm/bin/gen_kernel.dart",
         "--platform=$buildDir/vm_platform.dill",
         "--aot",
@@ -207,6 +211,7 @@ Future<void> test(
       ],
       [
         "$buildDir/dartaotruntime",
+        ...alwaysFlags,
         ...someAotRuntimeFlags(),
         "out/dartfuzz/$taskIndex.elf",
         ...dartArguments,
@@ -285,7 +290,10 @@ Future<void> flagFuzz(
   await Directory("out/dartfuzz").create();
 
   var executable = "out/ReleaseX64/dartvm";
-  var arguments = createDartCommand("out/dartfuzz/expected.$extension");
+  var arguments = [
+    ...alwaysFlags,
+    ...createDartCommand("out/dartfuzz/expected.$extension"),
+  ];
   var processResult = await Process.run(executable, arguments);
   if (processResult.exitCode != 0) {
     print("=== FAILURE ===");
diff --git a/runtime/tools/dartfuzz/flag_fuzzer_dart2js.dart b/runtime/tools/dartfuzz/flag_fuzzer_dart2js.dart
index c9fb67347f4..7a4d6b3ab46 100644
--- a/runtime/tools/dartfuzz/flag_fuzzer_dart2js.dart
+++ b/runtime/tools/dartfuzz/flag_fuzzer_dart2js.dart
@@ -9,7 +9,6 @@ import "flag_fuzzer.dart";
 
 Future<void> main() => flagFuzz(
   (String output) => [
-    "--no-dds",
     "pkg/compiler/lib/src/dart2js.dart",
     "--invoker=test",
     "--platform-binaries=out/ReleaseX64",