diff --git a/app/src/main/java/github/luv/mockgeofix/command/PasswordCommand.java b/app/src/main/java/github/luv/mockgeofix/command/PasswordCommand.java
index fe015fc..48c59c2 100644
--- a/app/src/main/java/github/luv/mockgeofix/command/PasswordCommand.java
+++ b/app/src/main/java/github/luv/mockgeofix/command/PasswordCommand.java
@@ -31,8 +31,10 @@ public void execute(SocketChannel client, String command) {
         String storedPassword = pref.getString("password","");
         if (password.equals(storedPassword)) {
             mIsLoggedIn.put(client, Boolean.TRUE);
+            ResponseWriter.ok(client);
         } else {
             mIsLoggedIn.put(client, Boolean.FALSE);
+            ResponseWriter.writeLine(client, "KO: Incorrect password.");
         }
     }
 
diff --git a/app/src/main/java/github/luv/mockgeofix/util/ResponseWriter.java b/app/src/main/java/github/luv/mockgeofix/util/ResponseWriter.java
index 35c6053..3b55507 100644
--- a/app/src/main/java/github/luv/mockgeofix/util/ResponseWriter.java
+++ b/app/src/main/java/github/luv/mockgeofix/util/ResponseWriter.java
@@ -36,6 +36,10 @@ public static boolean writeLine(SocketChannel client, String response) {
         return write(client, response+"\r\n");
     }
 
+    public static boolean ok(SocketChannel client) {
+        return write(client, "OK\r\n");
+    }
+
     public static boolean unknownCommand(SocketChannel client) {
         return write(client, "KO: unknown command, try 'help'\r\n");
     }