diff --git a/src/integration/Reviews.spec.ts b/src/integration/Reviews.spec.ts
index 7fad6b8f0..4cb47120f 100644
--- a/src/integration/Reviews.spec.ts
+++ b/src/integration/Reviews.spec.ts
@@ -1265,6 +1265,23 @@ describe("Review Requests Integration Tests", () => {
       })
     })
 
+    it("should return 404 if review request is not approved", async () => {
+      // Arrange
+      const app = generateRouterForUserWithSite(
+        subrouter,
+        MOCK_USER_SESSION_DATA_ONE,
+        MOCK_REPO_NAME_TWO
+      )
+
+      // Act
+      const actual = await request(app).post(
+        `/${MOCK_REPO_NAME_TWO}/${MOCK_GITHUB_PULL_REQUEST_NUMBER}/merge`
+      )
+
+      // Assert
+      expect(actual.statusCode).toEqual(404)
+    })
+
     it("should merge the pull request successfully", async () => {
       // Arrange
       const app = generateRouterForUserWithSite(
@@ -1272,6 +1289,17 @@ describe("Review Requests Integration Tests", () => {
         MOCK_USER_SESSION_DATA_ONE,
         MOCK_REPO_NAME_ONE
       )
+      const activeReviewRequest = await ReviewRequest.findOne({
+        where: {
+          requestorId: MOCK_USER_ID_ONE,
+          siteId: MOCK_SITE_ID_ONE,
+        },
+      })
+      if (!activeReviewRequest) fail("Should not reach here")
+      await activeReviewRequest.set({
+        reviewStatus: ReviewRequestStatus.Approved,
+      })
+      await activeReviewRequest.save()
       mockGenericAxios.post.mockResolvedValueOnce(null)
       mockGenericAxios.put.mockResolvedValueOnce(null)
 
diff --git a/src/routes/v2/authenticated/__tests__/review.spec.ts b/src/routes/v2/authenticated/__tests__/review.spec.ts
index 81a76fb20..16e56c057 100644
--- a/src/routes/v2/authenticated/__tests__/review.spec.ts
+++ b/src/routes/v2/authenticated/__tests__/review.spec.ts
@@ -738,9 +738,9 @@ describe("Review Requests Router", () => {
       // Arrange
 
       mockCollaboratorsService.getRole.mockResolvedValueOnce("role")
-      mockReviewRequestService.getReviewRequest.mockResolvedValueOnce(
-        "review request"
-      )
+      mockReviewRequestService.getReviewRequest.mockResolvedValueOnce({
+        reviewStatus: ReviewRequestStatus.Approved,
+      })
       mockReviewRequestService.mergeReviewRequest.mockResolvedValueOnce(
         undefined
       )
diff --git a/src/routes/v2/authenticated/review.ts b/src/routes/v2/authenticated/review.ts
index 0a71aedfb..934698f62 100644
--- a/src/routes/v2/authenticated/review.ts
+++ b/src/routes/v2/authenticated/review.ts
@@ -716,13 +716,19 @@ export class ReviewsRouter {
       return res.status(404).json({ message: possibleReviewRequest.message })
     }
 
-    // Step 4: Merge review request
+    // Step 4: Check if review request is valid
+    if (possibleReviewRequest.reviewStatus !== ReviewRequestStatus.Approved)
+      return res
+        .status(404)
+        .json({ message: "Approved review request not found!" })
+
+    // Step 5: Merge review request
     // NOTE: We are not checking for existence of PR
     // as the underlying Github API returns 404 if
     // the requested review could not be found.
     await this.reviewRequestService.mergeReviewRequest(possibleReviewRequest)
 
-    // Step 5: Clean up the review request view records
+    // Step 6: Clean up the review request view records
     // The error is discarded as we are guaranteed to have a review request
     await this.reviewRequestService.deleteAllReviewRequestViews(
       site.value,