diff --git a/src/app/v/[token]/dispatch/_components/uplift-request-form.tsx b/src/app/v/[token]/dispatch/_components/uplift-request-form.tsx
index fa50f2b9..0ee1744a 100644
--- a/src/app/v/[token]/dispatch/_components/uplift-request-form.tsx
+++ b/src/app/v/[token]/dispatch/_components/uplift-request-form.tsx
@@ -43,12 +43,15 @@ export function UpliftRequestForm({
   const [reason, setReason] = useState(initialReason);
   const [evidenceFile, setEvidenceFile] = useState<File | undefined>();
   const [formError, setFormError] = useState("");
+  const [checkingEvidence, setCheckingEvidence] = useState(false);
   const latestSelection = useRef(0);
 
   const showApprovalFields = mode === "revise" || isApprovalRequired(requested, currentNte);
 
   const submit = (event: React.FormEvent) => {
     event.preventDefault();
+    // The picked file is not in state until its check settles; submitting now would validate the old one.
+    if (checkingEvidence) return;
     const amount = Number.parseFloat(requested);
     const validationError = validateUpliftAmount(requested, currentNte, reason, {
       file: evidenceFile,
@@ -64,11 +67,13 @@ export function UpliftRequestForm({
 
   const chooseFile = async (file?: File) => {
     const selection = ++latestSelection.current;
+    setCheckingEvidence(Boolean(file));
     const validationMessage = file ? await validateVendorDocument(file, mediaUsage) : undefined;
     // A newer pick may have settled while this one's video metadata was still loading.
     if (selection !== latestSelection.current) return;
     setFormError(validationMessage ?? "");
     setEvidenceFile(file);
+    setCheckingEvidence(false);
   };
 
   const shownError = errorMessage || formError;
@@ -147,8 +152,14 @@ export function UpliftRequestForm({
         {shownError}
       </Text>
       <div className="vp-actions">
-        <button type="submit" className="vp-btn vp-btn-primary" disabled={busy}>
-          {busy ? "Submitting…" : mode === "revise" ? "Submit revision" : "Request uplift"}
+        <button type="submit" className="vp-btn vp-btn-primary" disabled={busy || checkingEvidence}>
+          {busy
+            ? "Submitting…"
+            : checkingEvidence
+              ? "Checking evidence…"
+              : mode === "revise"
+                ? "Submit revision"
+                : "Request uplift"}
         </button>
         {mode === "revise" && (
           <button type="button" className="vp-btn vp-btn-ghost" onClick={onCancel} disabled={busy}>
diff --git a/src/test/app/v/uplift-request-form.test.tsx b/src/test/app/v/uplift-request-form.test.tsx
index d39d6d47..d09e0cca 100644
--- a/src/test/app/v/uplift-request-form.test.tsx
+++ b/src/test/app/v/uplift-request-form.test.tsx
@@ -1,6 +1,9 @@
 import { fireEvent, render, screen, waitFor } from "@testing-library/react";
 import { describe, expect, it, vi } from "vitest";
 import { UpliftRequestForm } from "@/app/v/[token]/dispatch/_components/uplift-request-form";
+import { probeVideoDurationSeconds } from "@/lib/probe-video-duration";
+
+vi.mock("@/lib/probe-video-duration", () => ({ probeVideoDurationSeconds: vi.fn() }));
 
 function renderForm(overrides: Partial<React.ComponentProps<typeof UpliftRequestForm>> = {}) {
   return render(
@@ -73,6 +76,35 @@ describe("UpliftRequestForm revise mode", () => {
     );
   });
 
+  it("holds submit while a picked video is still being checked, then submits that video", async () => {
+    let finishProbe: (seconds: number | null) => void = () => {};
+    vi.mocked(probeVideoDurationSeconds).mockImplementationOnce(
+      () => new Promise((resolve) => (finishProbe = resolve)),
+    );
+    const onSubmit = vi.fn();
+    renderForm({ initialRequested: "1200", initialReason: "Extra parts", onSubmit });
+
+    const video = new File(["mov"], "IMG_0001.MOV", { type: "video/quicktime" });
+    fireEvent.change(screen.getByLabelText(/evidence/i), { target: { files: [video] } });
+
+    const checking = await screen.findByRole("button", { name: "Checking evidence…" });
+    expect(checking).toBeDisabled();
+    fireEvent.submit(checking.closest("form")!);
+    expect(onSubmit).not.toHaveBeenCalled();
+    expect(screen.queryByText(/approval-required requests need evidence/i)).not.toBeInTheDocument();
+
+    finishProbe(30);
+    const submitButton = await screen.findByRole("button", { name: /submit revision/i });
+    expect(submitButton).toBeEnabled();
+    fireEvent.click(submitButton);
+
+    expect(onSubmit).toHaveBeenCalledWith({
+      amount: 1200,
+      reason: "Extra parts",
+      evidenceFile: video,
+    });
+  });
+
   it("reports the current NTE threshold in the actionable error", () => {
     renderForm({ initialRequested: "900", currentNte: 1000 });