diff --git a/packages/app/src/runtime/server/global-sync/utils.test.ts b/packages/app/src/runtime/server/global-sync/utils.test.ts
index da051c3311c..7a29c194019 100644
--- a/packages/app/src/runtime/server/global-sync/utils.test.ts
+++ b/packages/app/src/runtime/server/global-sync/utils.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import type { AgentListOutput, ModelListOutput, ProviderListOutput } from "@opencode-ai/client/promise"
-import { directoryKey, normalizeAgentList, normalizeProviderList } from "./utils"
+import type { AgentListOutput, ModelListOutput, Project, ProviderListOutput } from "@opencode-ai/client/promise"
+import { directoryKey, normalizeAgentList, normalizeProjectInfo, normalizeProviderList } from "./utils"
 
 describe("normalizeAgentList", () => {
   test("adapts current agents to the app agent shape", () => {
@@ -85,6 +85,15 @@ describe("normalizeProviderList", () => {
   })
 })
 
+describe("normalizeProjectInfo", () => {
+  test("keeps the project VCS backend", () => {
+    const project = { id: "prj", canonical: "/repo", time: { created: 1, updated: 1 }, sandboxes: [] }
+    expect(normalizeProjectInfo({ ...project, vcs: "git" } as Project).vcs).toBe("git")
+    expect(normalizeProjectInfo({ ...project, vcs: "hg" } as Project).vcs).toBe("hg")
+    expect(normalizeProjectInfo(project as Project).vcs).toBeUndefined()
+  })
+})
+
 describe("directoryKey", () => {
   test("normalizes slashes", () => {
     expect(String(directoryKey("C:\\Repos\\sst\\opencode"))).toBe("C:/Repos/sst/opencode")
diff --git a/packages/app/src/runtime/server/global-sync/utils.ts b/packages/app/src/runtime/server/global-sync/utils.ts
index 3cddc558a21..a83ef47e9c9 100644
--- a/packages/app/src/runtime/server/global-sync/utils.ts
+++ b/packages/app/src/runtime/server/global-sync/utils.ts
@@ -135,6 +135,5 @@ export function normalizeProjectInfo(project: Project | CurrentProject): Project
     ...project,
     worktree,
     worktrees: "worktrees" in project ? project.worktrees : [{ directory: worktree }],
-    vcs: project.vcs === "git" ? "git" : undefined,
   }
 }
diff --git a/packages/app/src/session/review/model.ts b/packages/app/src/session/review/model.ts
index d4f1da6c4ca..d4d9cd68ddb 100644
--- a/packages/app/src/session/review/model.ts
+++ b/packages/app/src/session/review/model.ts
@@ -55,9 +55,9 @@ export function createSessionReview(input: {
   const options = createMemo<ChangeMode[]>(() => {
     const list: ChangeMode[] = []
     const project = input.session.project()
-    if (project?.vcs === "git") list.push("git")
+    if (project?.vcs) list.push("git")
     if (
-      project?.vcs === "git" &&
+      project?.vcs &&
       vcs()?.branch.current &&
       vcs()?.branch.default &&
       vcs()?.branch.current !== vcs()?.branch.default
@@ -94,7 +94,7 @@ export function createSessionReview(input: {
     const value = vcsMode()
     return {
       queryKey: [...vcsKey(), value] as const,
-      enabled: server.connection.status() === "connected" && wantsReview() && input.session.project()?.vcs === "git",
+      enabled: server.connection.status() === "connected" && wantsReview() && !!input.session.project()?.vcs,
       refetchOnMount: "always" as const,
       refetchOnWindowFocus: true,
       queryFn: value
@@ -110,7 +110,7 @@ export function createSessionReview(input: {
   })
   const detailsQuery = createQuery(() => ({
     queryKey: [server.scope, "session-details", input.session.workspace.directory()] as const,
-    enabled: state.detailsOpen && server.connection.status() === "connected" && input.session.project()?.vcs === "git",
+    enabled: state.detailsOpen && server.connection.status() === "connected" && !!input.session.project()?.vcs,
     queryFn: () =>
       server.api.vcs
         .diff({ location: { directory: input.session.workspace.directory() }, mode: "working" })
@@ -413,7 +413,7 @@ export function createSessionReview(input: {
       tab: () => state.mobileTab,
     },
     mode,
-    noGit: createMemo(() => !!input.session.project() && input.session.project()?.vcs !== "git"),
+    noGit: createMemo(() => !!input.session.project() && !input.session.project()?.vcs),
     open,
     openFile,
     options,
diff --git a/packages/app/src/session/screen.tsx b/packages/app/src/session/screen.tsx
index 7bec153f9d2..f227eba5868 100644
--- a/packages/app/src/session/screen.tsx
+++ b/packages/app/src/session/screen.tsx
@@ -165,7 +165,7 @@ export function SessionScreen(props: { session: SessionModel }) {
                         baseBranch={
                           session.shared.data.location.vcs.info({ directory: project().worktree })?.branch.current
                         }
-                        diffs={project().vcs === "git" ? review.details.diffs() : []}
+                        diffs={project().vcs ? review.details.diffs() : []}
                         sessionID={session.identity.params.id ?? ""}
                         moveEligible={composer.workspaceMoveEligible()}
                         moveDismissed={store.mobileMoveDismissed}