diff --git a/tests/integration/api_comment_test.go b/tests/integration/api_comment_test.go
index ad0d7ab624..bc11dcf4be 100644
--- a/tests/integration/api_comment_test.go
+++ b/tests/integration/api_comment_test.go
@@ -320,14 +320,25 @@ func TestAPIEditCommentWithDate(t *testing.T) {
 }
 
 func TestAPIDeleteComment(t *testing.T) {
+	defer tests.AddFixtures("tests/integration/fixtures/TestAPIComment/")()
 	defer tests.PrepareTestEnv(t)()
 
-	comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{},
+	comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: 1008},
 		unittest.Cond("type = ?", issues_model.CommentTypeComment))
 	issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: comment.IssueID})
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID})
 	repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
 
+	t.Run("UnrelatedCommentID", func(t *testing.T) {
+		// Using the ID of a comment that does not belong to the repository must fail
+		repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 4})
+		repoOwner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
+		token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeWriteIssue)
+		req := NewRequestf(t, "DELETE", "/api/v1/repos/%s/%s/issues/comments/%d?token=%s",
+			repoOwner.Name, repo.Name, comment.ID, token)
+		MakeRequest(t, req, http.StatusNotFound)
+	})
+
 	token := getUserToken(t, repoOwner.Name, auth_model.AccessTokenScopeWriteIssue)
 	req := NewRequestf(t, "DELETE", "/api/v1/repos/%s/%s/issues/comments/%d?token=%s",
 		repoOwner.Name, repo.Name, comment.ID, token)