diff --git a/Facepunch.Steamworks.Test/NetworkingSocketsTest.TestSocketInterface.cs b/Facepunch.Steamworks.Test/NetworkingSocketsTest.TestSocketInterface.cs
index 9e5c6c9..cbbfac8 100644
--- a/Facepunch.Steamworks.Test/NetworkingSocketsTest.TestSocketInterface.cs
+++ b/Facepunch.Steamworks.Test/NetworkingSocketsTest.TestSocketInterface.cs
@@ -96,7 +96,7 @@ namespace Steamworks
 
 				await Task.Delay( 1000 );
 
-				Close();
+				//Close();
 			}
 
 			public override unsafe void OnMessage( Connection connection, NetIdentity identity, IntPtr data, int size, long messageNum, long recvTime, int channel )
diff --git a/Facepunch.Steamworks/Networking/NetDebugFunc.cs b/Facepunch.Steamworks/Networking/NetDebugFunc.cs
index 85e7aaa..ec4cabd 100644
--- a/Facepunch.Steamworks/Networking/NetDebugFunc.cs
+++ b/Facepunch.Steamworks/Networking/NetDebugFunc.cs
@@ -4,5 +4,6 @@ using System.Runtime.InteropServices;
 
 namespace Steamworks.Data
 {
-	delegate void NetDebugFunc( NetDebugOutput nType, string pszMsg );
+	[UnmanagedFunctionPointer( Platform.CC )]
+	delegate void NetDebugFunc( [In] NetDebugOutput nType, [In] IntPtr pszMsg );
 }
\ No newline at end of file
diff --git a/Facepunch.Steamworks/SteamNetworkingUtils.cs b/Facepunch.Steamworks/SteamNetworkingUtils.cs
index 7e02b3a..b53760b 100644
--- a/Facepunch.Steamworks/SteamNetworkingUtils.cs
+++ b/Facepunch.Steamworks/SteamNetworkingUtils.cs
@@ -178,7 +178,9 @@ namespace Steamworks
 			set
 			{
 				_debugLevel = value;
-				Internal.SetDebugOutputFunction( value, OnDebugMessage );
+				_debugFunc = new NetDebugFunc( OnDebugMessage );
+
+				Internal.SetDebugOutputFunction( value, _debugFunc );
 			}
 		}
 
@@ -187,6 +189,11 @@ namespace Steamworks
 		/// </summary>
 		private static NetDebugOutput _debugLevel;
 
+		/// <summary>
+		/// We need to keep the delegate around until it's not used anymore
+		/// </summary>
+		static NetDebugFunc _debugFunc;
+
 		struct DebugMessage
 		{
 			public NetDebugOutput Type;
@@ -198,9 +205,9 @@ namespace Steamworks
 		/// <summary>
 		/// This can be called from other threads - so we're going to queue these up and process them in a safe place.
 		/// </summary>
-		private static void OnDebugMessage( NetDebugOutput nType, string pszMsg )
+		private static void OnDebugMessage( NetDebugOutput nType, IntPtr str )
 		{
-			debugMessages.Enqueue( new DebugMessage { Type = nType, Msg = pszMsg } );
+			debugMessages.Enqueue( new DebugMessage { Type = nType, Msg = Helpers.MemoryToString( str ) } );
 		}
 
 		/// <summary>