diff --git a/config/eslint/eslint.seatbelt.tsv b/config/eslint/eslint.seatbelt.tsv
index 8b5407c29c12..bb92c04fb8f5 100644
--- a/config/eslint/eslint.seatbelt.tsv
+++ b/config/eslint/eslint.seatbelt.tsv
@@ -65,7 +65,7 @@
 "../../src/Expensify.tsx"	"react-hooks/set-state-in-effect"	1
 "../../src/GlobalModals.tsx"	"no-restricted-syntax"	2
 "../../src/ONYXKEYS.ts"	"no-restricted-syntax"	2
-"../../src/ROUTES.ts"	"@typescript-eslint/no-deprecated/getUrlWithBackToParam"	104
+"../../src/ROUTES.ts"	"@typescript-eslint/no-deprecated/getUrlWithBackToParam"	105
 "../../src/ROUTES.ts"	"@typescript-eslint/no-unsafe-type-assertion"	3
 "../../src/TIMEZONES.ts"	"@typescript-eslint/no-unsafe-type-assertion"	1
 "../../src/components/AccountingConnectionConfirmationModal.tsx"	"@typescript-eslint/no-deprecated/ConfirmModal"	1
diff --git a/src/ROUTES.ts b/src/ROUTES.ts
index f7b9df0bae9d..3b24a721cf97 100644
--- a/src/ROUTES.ts
+++ b/src/ROUTES.ts
@@ -1695,6 +1695,7 @@ const ROUTES = {
         getRoute: (reportID: string | undefined, reportActionID?: string, referrer?: string, backTo?: string) => {
             if (!reportID) {
                 Log.warn('Invalid reportID is used to build the REPORT_WITH_ID route');
+                return getUrlWithBackToParam(ROUTES.HOME, backTo);
             }
             const baseRoute = reportActionID ? (`r/${reportID}/${reportActionID}` as const) : (`r/${reportID}` as const);
 
diff --git a/tests/unit/navigateAfterOnboardingTest.ts b/tests/unit/navigateAfterOnboardingTest.ts
index 312199815a36..634558a7f2d8 100644
--- a/tests/unit/navigateAfterOnboardingTest.ts
+++ b/tests/unit/navigateAfterOnboardingTest.ts
@@ -74,8 +74,11 @@ describe('navigateAfterOnboarding', () => {
     });
 
     it('should not navigate to the admin room report if onboardingAdminsChatReportID is not provided on larger screens', () => {
+        const navigate = jest.spyOn(Navigation, 'navigate');
         navigateAfterOnboarding(false, true, '', {}, undefined, undefined);
-        expect(Navigation.navigate).not.toHaveBeenCalledWith(ROUTES.REPORT_WITH_ID.getRoute(undefined));
+        // Without an admins chat report, we fall back to HOME to trigger guard evaluation instead of opening a report.
+        expect(navigate).not.toHaveBeenCalledWith(ROUTES.REPORT_WITH_ID.getRoute(ONBOARDING_ADMINS_CHAT_REPORT_ID));
+        expect(navigate).toHaveBeenCalledWith(ROUTES.HOME);
     });
 
     it('should not navigate to last accessed report if it is a concierge chat on small screens', async () => {