diff --git a/apps/desktop/src/lib/ai/service.ts b/apps/desktop/src/lib/ai/service.ts
index 3894bb355..b0a7ad7f7 100644
--- a/apps/desktop/src/lib/ai/service.ts
+++ b/apps/desktop/src/lib/ai/service.ts
@@ -62,7 +62,7 @@ interface SummarizeCommitOpts extends BaseAIServiceOpts {
 }
 
 interface SummarizeBranchOpts extends BaseAIServiceOpts {
-	hunks: Hunk[];
+	hunks: DiffInput[];
 	branchTemplate?: Prompt;
 }
 
@@ -75,8 +75,13 @@ interface SummarizePROpts extends BaseAIServiceOpts {
 	prBodyTemplate?: string;
 }
 
+interface DiffInput {
+	filePath: string;
+	diff: string;
+}
+
 // Exported for testing only
-export function buildDiff(hunks: Hunk[], limit: number) {
+export function buildDiff(hunks: DiffInput[], limit: number) {
 	return shuffle(hunks.map((h) => `${h.filePath} - ${h.diff}`))
 		.join('\n')
 		.slice(0, limit);
diff --git a/apps/desktop/src/lib/branch/SeriesHeader.svelte b/apps/desktop/src/lib/branch/SeriesHeader.svelte
index db7c0158d..5d36b9fdb 100644
--- a/apps/desktop/src/lib/branch/SeriesHeader.svelte
+++ b/apps/desktop/src/lib/branch/SeriesHeader.svelte
@@ -23,6 +23,7 @@
 	import { isFailure } from '$lib/result';
 	import { openExternalUrl } from '$lib/utils/url';
 	import { BranchController } from '$lib/vbranches/branchController';
+	import { listCommitFiles } from '$lib/vbranches/remoteCommits';
 	import { PatchSeries, VirtualBranch, type CommitStatus } from '$lib/vbranches/types';
 	import { CloudBranchesService } from '@gitbutler/shared/cloud/stacks/service';
 	import { getContext, getContextStore } from '@gitbutler/shared/context';
@@ -140,7 +141,15 @@
 	async function generateBranchName() {
 		if (!aiGenEnabled || !currentSeries) return;
 
-		const hunks = currentSeries.patches.flatMap((p) => p.files.flatMap((f) => f.hunks));
+		let hunk_promises = currentSeries.patches.flatMap(async (p) => {
+			let files = await listCommitFiles(project.id, p.id);
+			return files.flatMap((f) =>
+				f.hunks.map((h) => {
+					return { filePath: f.path, diff: h.diff };
+				})
+			);
+		});
+		let hunks = (await Promise.all(hunk_promises)).flat();
 
 		const prompt = promptService.selectedBranchPrompt(project.id);
 		const messageResult = await aiService.summarizeBranch({