diff --git a/ldap-auth.sh b/ldap-auth.sh
index ad6ffe8..6784d8f 100755
--- a/ldap-auth.sh
+++ b/ldap-auth.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 #
 # ldap-auth.sh - Simple shell script to authenticate users against LDAP
@@ -201,6 +201,9 @@ case "$CLIENT" in
 		ldap_auth_curl
 		;;
 	"ldapsearch")
+                if [ -z "$(which ldapsearch)" ]; then
+			apk add openldap-clients
+		fi
 		ldap_auth_ldapsearch
 		;;
 	*)
@@ -231,7 +234,6 @@ if [ $result -ne 0 ]; then
 	type on_auth_failure > /dev/null && on_auth_failure
 	exit 1
 fi
-
 log "User '$username' authenticated successfully."
 type on_auth_success > /dev/null && on_auth_success
 exit 0