diff --git a/frontend/src/lib/xray/stream-wire-normalize.ts b/frontend/src/lib/xray/stream-wire-normalize.ts
index fddb1c6a4..4dee44196 100644
--- a/frontend/src/lib/xray/stream-wire-normalize.ts
+++ b/frontend/src/lib/xray/stream-wire-normalize.ts
@@ -267,7 +267,6 @@ export function normalizeSockoptForWire(
   const he = out.happyEyeballs;
   if (isRecord(he)) {
     const heOut: Record<string, unknown> = { ...he };
-    if (heOut.tryDelayMs === 0) delete heOut.tryDelayMs;
     if (heOut.prioritizeIPv6 === false) delete heOut.prioritizeIPv6;
     if (heOut.interleave === 1) delete heOut.interleave;
     if (heOut.maxConcurrentTry === 4) delete heOut.maxConcurrentTry;
diff --git a/frontend/src/test/stream-wire-normalize.test.ts b/frontend/src/test/stream-wire-normalize.test.ts
index cac527736..16e9f88bb 100644
--- a/frontend/src/test/stream-wire-normalize.test.ts
+++ b/frontend/src/test/stream-wire-normalize.test.ts
@@ -213,6 +213,14 @@ describe('normalizeSockoptForWire', () => {
 
     expect(out?.happyEyeballs).toEqual({ tryDelayMs: 250 });
   });
+
+  it('keeps an explicit tryDelayMs of 0 so it cannot rehydrate as the 250 default', () => {
+    const out = normalizeSockoptForWire({
+      happyEyeballs: { tryDelayMs: 0, prioritizeIPv6: true, interleave: 1, maxConcurrentTry: 4 },
+    });
+
+    expect(out?.happyEyeballs).toEqual({ tryDelayMs: 0, prioritizeIPv6: true });
+  });
 });
 
 describe('normalizeStreamSettingsForWire reality', () => {