diff --git a/perl-script/create-user.pl b/perl-script/create-user.pl
index 92742a9..637c3fe 100644
--- a/perl-script/create-user.pl
+++ b/perl-script/create-user.pl
@@ -69,7 +69,7 @@ sub create($){
 	}
 	
 	system($cmd);
-	system("echo '$pub_key' > /home/$username/.ssh/authorized_keys");
+	system("echo '".$pub_key."' > /home/$username/.ssh/authorized_keys");
 	system("chmod 711 /home/$username");
 	system("mv $fn1 $fn1.done");
 	system("echo $username >> user_list.txt");
diff --git a/requirements.txt b/requirements.txt
index 139affa..46a48dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1 @@
-click==7.1.2
 Flask==1.1.2
-itsdangerous==1.1.0
-Jinja2==2.11.2
-MarkupSafe==1.1.1
-Werkzeug==1.0.1