diff --git a/examples/button-clicker/Assets/DiscordController.cs b/examples/button-clicker/Assets/DiscordController.cs
index 1bc11d4..bde8ac3 100644
--- a/examples/button-clicker/Assets/DiscordController.cs
+++ b/examples/button-clicker/Assets/DiscordController.cs
@@ -1,6 +1,4 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
+using UnityEngine;
 
 public class DiscordController : MonoBehaviour {
     public DiscordRpc.RichPresence presence;
diff --git a/examples/button-clicker/Assets/DiscordRpc.cs b/examples/button-clicker/Assets/DiscordRpc.cs
index 447337f..47d4da9 100644
--- a/examples/button-clicker/Assets/DiscordRpc.cs
+++ b/examples/button-clicker/Assets/DiscordRpc.cs
@@ -2,19 +2,19 @@
 
 public class DiscordRpc
 {
-    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     public delegate void ReadyCallback();
 
-    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     public delegate void DisconnectedCallback(int errorCode, string message);
 
-    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     public delegate void ErrorCallback(int errorCode, string message);
 
-    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     public delegate void JoinCallback(string secret);
 
-    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     public delegate void SpectateCallback(string secret);
 
     public struct EventHandlers
@@ -46,16 +46,16 @@ public class DiscordRpc
         public bool instance;
     }
 
-    [DllImport("discord-rpc", EntryPoint = "Discord_Initialize")]
+    [DllImport("discord-rpc", EntryPoint = "Discord_Initialize", CallingConvention = CallingConvention.Cdecl)]
     public static extern void Initialize(string applicationId, ref EventHandlers handlers, bool autoRegister, string optionalSteamId);
 
-    [DllImport("discord-rpc", EntryPoint = "Discord_Shutdown")]
+    [DllImport("discord-rpc", EntryPoint = "Discord_Shutdown", CallingConvention = CallingConvention.Cdecl)]
     public static extern void Shutdown();
 
-    [DllImport("discord-rpc", EntryPoint = "Discord_RunCallbacks")]
+    [DllImport("discord-rpc", EntryPoint = "Discord_RunCallbacks", CallingConvention = CallingConvention.Cdecl)]
     public static extern void RunCallbacks();
 
-    [DllImport("discord-rpc", EntryPoint = "Discord_UpdatePresence")]
+    [DllImport("discord-rpc", EntryPoint = "Discord_UpdatePresence", CallingConvention = CallingConvention.Cdecl)]
     public static extern void UpdatePresence(ref RichPresence presence);
 }