diff --git a/packages/opencode/src/commit-message/__tests__/generate.test.ts b/packages/opencode/src/commit-message/__tests__/generate.test.ts
index cbbde7253b..7459e73272 100644
--- a/packages/opencode/src/commit-message/__tests__/generate.test.ts
+++ b/packages/opencode/src/commit-message/__tests__/generate.test.ts
@@ -1,8 +1,9 @@
 import { describe, expect, test, mock, beforeEach } from "bun:test"
+import type { GitContext } from "../types"
 
 // Mock dependencies before importing the module under test
 
-let mockGitContext = {
+let mockGitContext: GitContext = {
   branch: "main",
   recentCommits: ["abc1234 initial commit"],
   files: [