diff --git a/directory.ts b/directory.ts
index c133f6c..8d5ded4 100644
--- a/directory.ts
+++ b/directory.ts
@@ -2,7 +2,7 @@ import config from "./config.ts";
 import { lookupUsernameByPubkey as ldapLookupUsername } from "./ldap.ts";
 import { lookupPubkeyByUsername as ldapLookupPubkey } from "./ldap.ts";
 
-export function lookupUsernameByPubkey(pubkey: string) {
+export async function lookupUsernameByPubkey(pubkey: string): Promise<string | undefined> {
   let username;
   for (const [key, value] of Object.entries(config.staticUsers)) {
     if (value === pubkey) {
@@ -20,7 +20,7 @@ export function lookupUsernameByPubkey(pubkey: string) {
   }
 }
 
-export function lookupPubkeyByUsername(username: string) {
+export async function lookupPubkeyByUsername(username: string): Promise<string | undefined> {
   const pubkey = config.staticUsers[username];
 
   if (pubkey) {
diff --git a/ldap.ts b/ldap.ts
index ec3d973..ef17d13 100644
--- a/ldap.ts
+++ b/ldap.ts
@@ -8,8 +8,8 @@ if (ldapEnabled) {
   client = new Client({ url: ldap.url as string });
 }
 
-export async function lookupPubkeyByUsername(username: string) {
-  let pubkey;
+export async function lookupPubkeyByUsername(username: string): Promise<string | undefined> {
+  let pubkey: string | undefined;
 
   try {
     await client.bind(ldap.bindDN as string, ldap.password as string);
@@ -23,7 +23,7 @@ export async function lookupPubkeyByUsername(username: string) {
       searchEntries.length > 0 &&
       typeof searchEntries[0].nostrKey === "string"
     ) {
-      pubkey = searchEntries[0].nostrKey;
+      pubkey = searchEntries[0].nostrKey.toString();
     }
 
     await client.unbind();
@@ -35,8 +35,8 @@ export async function lookupPubkeyByUsername(username: string) {
   return pubkey;
 }
 
-export async function lookupUsernameByPubkey(pubkey: string) {
-  let username;
+export async function lookupUsernameByPubkey(pubkey: string): Promise<string | undefined> {
+  let username: string | undefined;
 
   try {
     await client.bind(ldap.bindDN as string, ldap.password as string);
@@ -47,7 +47,7 @@ export async function lookupUsernameByPubkey(pubkey: string) {
     });
 
     if (searchEntries.length > 0) {
-      username = searchEntries[0].cn;
+      username = searchEntries[0].cn.toString();
     }
   } catch (e) {
     await client.unbind();