diff --git a/ldap.ts b/ldap.ts
index 07867b9..d021572 100644
--- a/ldap.ts
+++ b/ldap.ts
@@ -19,7 +19,12 @@ export async function lookupPubkeyByUsername(username: string) {
       attributes: ["nostrKey"],
     });
 
-    pubkey = searchEntries[0]?.nostrKey as string;
+    if (
+      searchEntries.length > 0 &&
+      typeof searchEntries[0].nostrKey === "string"
+    ) {
+      pubkey = searchEntries[0].nostrKey;
+    }
   } catch (e) {
     console.error(e);
   } finally {
@@ -40,7 +45,9 @@ export async function lookupUsernameByPubkey(pubkey: string) {
       attributes: ["cn"],
     });
 
-    username = searchEntries[0]?.cn;
+    if (searchEntries.length > 0) {
+      username = searchEntries[0].cn;
+    }
   } catch (e) {
     console.error(e);
   } finally {
diff --git a/tests/feeds_test.ts b/tests/feeds_test.ts
index b629d92..2e21231 100644
--- a/tests/feeds_test.ts
+++ b/tests/feeds_test.ts
@@ -4,7 +4,7 @@ import { cleanContentHtml } from "../feeds.ts";
 
 describe("Feeds", () => {
   describe("#cleanContentHtml", () => {
-    let articleHtml = Deno.readTextFileSync(
+    const articleHtml = Deno.readTextFileSync(
       "tests/fixtures/gfm-content-1.html",
     );