diff --git a/Facepunch.Steamworks/SteamInventory.cs b/Facepunch.Steamworks/SteamInventory.cs
index 65ff914..f0a63c0 100644
--- a/Facepunch.Steamworks/SteamInventory.cs
+++ b/Facepunch.Steamworks/SteamInventory.cs
@@ -177,7 +177,7 @@ namespace Steamworks
 		/// </summary>
 		public static bool GetAllItems()
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 			return Internal.GetAllItems( ref sresult );
 		}
 
@@ -186,7 +186,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> GetAllItemsAsync()
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			if ( !Internal.GetAllItems( ref sresult ) )
 				return null;
@@ -202,7 +202,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> GenerateItemAsync( InventoryDef target, int amount )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			var defs = new InventoryDefId[] { target.Id };
 			var cnts = new uint[] { (uint)amount };
@@ -220,7 +220,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> CraftItemAsync( InventoryItem[] list, InventoryDef target )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			var give = new InventoryDefId[] { target.Id };
 			var givec = new uint[] { 1 };
@@ -241,7 +241,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> CraftItemAsync( InventoryItem.Amount[] list, InventoryDef target )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			var give = new InventoryDefId[] { target.Id };
 			var givec = new uint[] { 1 };
@@ -283,7 +283,7 @@ namespace Steamworks
 			{
 				Marshal.Copy( data, 0, ptr, dataLength );
 
-				var sresult = default( SteamInventoryResult_t );
+				var sresult = Defines.k_SteamInventoryResultInvalid;
 
 				if ( !Internal.DeserializeResult( ref sresult, (IntPtr)ptr, (uint)dataLength, false ) )
 					return null;
@@ -304,7 +304,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> GrantPromoItemsAsync()
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			if ( !Internal.GrantPromoItems( ref sresult ) )
 				return null;
@@ -318,7 +318,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> TriggerItemDropAsync( InventoryDefId id )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			if ( !Internal.TriggerItemDrop( ref sresult, id ) )
 				return null;
@@ -332,7 +332,7 @@ namespace Steamworks
 		/// </summary>
 		public static async Task<InventoryResult?> AddPromoItemAsync( InventoryDefId id )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 
 			if ( !Internal.AddPromoItem( ref sresult, id ) )
 				return null;
diff --git a/Facepunch.Steamworks/Structs/InventoryItem.cs b/Facepunch.Steamworks/Structs/InventoryItem.cs
index 27c76a5..4a917b5 100644
--- a/Facepunch.Steamworks/Structs/InventoryItem.cs
+++ b/Facepunch.Steamworks/Structs/InventoryItem.cs
@@ -53,7 +53,7 @@ namespace Steamworks
 		/// </summary>
 		public async Task<InventoryResult?> ConsumeAsync( int amount = 1 )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 			if ( !SteamInventory.Internal.ConsumeItem( ref sresult, Id, (uint)amount ) )
 				return null;
 
@@ -65,7 +65,7 @@ namespace Steamworks
 		/// </summary>
 		public async Task<InventoryResult?> SplitStackAsync( int quantity = 1 )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 			if ( !SteamInventory.Internal.TransferItemQuantity( ref sresult, Id, (uint)quantity, ulong.MaxValue ) )
 				return null;
 
@@ -77,7 +77,7 @@ namespace Steamworks
 		/// </summary>
 		public async Task<InventoryResult?> AddAsync( InventoryItem add, int quantity = 1 )
 		{
-			var sresult = default( SteamInventoryResult_t );
+			var sresult = Defines.k_SteamInventoryResultInvalid;
 			if ( !SteamInventory.Internal.TransferItemQuantity( ref sresult, add.Id, (uint)quantity, Id ) )
 				return null;