diff --git a/src/plugins/wired-hooks-compaction.test.ts b/src/plugins/wired-hooks-compaction.test.ts
index bffc84fc075..3cd43f5f11b 100644
--- a/src/plugins/wired-hooks-compaction.test.ts
+++ b/src/plugins/wired-hooks-compaction.test.ts
@@ -101,7 +101,11 @@ describe("compaction hook wiring", () => {
   }) {
     expect(params.call.event).toEqual(expect.objectContaining(params.expectedEvent));
     if (params.expectedSessionKey !== undefined) {
-      expect(params.call.hookCtx?.sessionKey).toBe(params.expectedSessionKey);
+      expect(params.call.hookCtx).toBeDefined();
+      if (!params.call.hookCtx) {
+        throw new Error("Expected compaction hook context");
+      }
+      expect(params.call.hookCtx.sessionKey).toBe(params.expectedSessionKey);
     }
   }