diff --git a/Content.IntegrationTests/Tests/VendingMachineTest.cs b/Content.IntegrationTests/Tests/VendingMachineTest.cs
deleted file mode 100644
index 3d3b263305..0000000000
--- a/Content.IntegrationTests/Tests/VendingMachineTest.cs
+++ /dev/null
@@ -1,41 +0,0 @@
-using System.Threading.Tasks;
-using Content.Shared.VendingMachines;
-using NUnit.Framework;
-using Robust.Shared.IoC;
-using Robust.Shared.Prototypes;
-
-namespace Content.IntegrationTests.Tests
-{
-    [TestFixture]
-    [TestOf(typeof(VendingMachineInventoryPrototype))]
-    public sealed class VendingMachineTest
-    {
-        [Test]
-        public async Task Test()
-        {
-            await using var pairTracker = await PoolManager.GetServerClient(new PoolSettings{NoClient = true});
-            var server = pairTracker.Pair.Server;
-
-            await server.WaitAssertion(() =>
-            {
-                var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
-                foreach (var vendorProto in prototypeManager.EnumeratePrototypes<VendingMachineInventoryPrototype>())
-                {
-                    foreach (var (item, _) in vendorProto.StartingInventory)
-                    {
-                        try
-                        {
-                            prototypeManager.Index<EntityPrototype>(item);
-                        }
-                        catch (UnknownPrototypeException)
-                        {
-                            throw new UnknownPrototypeException($"Unknown prototype {item} on vending inventory {vendorProto.ID}");
-                        }
-                    }
-                }
-            });
-
-            await pairTracker.CleanReturnAsync();
-        }
-    }
-}
diff --git a/Content.Shared/VendingMachines/VendingMachineInventoryPrototype.cs b/Content.Shared/VendingMachines/VendingMachineInventoryPrototype.cs
index 790f365cc5..2945374f87 100644
--- a/Content.Shared/VendingMachines/VendingMachineInventoryPrototype.cs
+++ b/Content.Shared/VendingMachines/VendingMachineInventoryPrototype.cs
@@ -1,5 +1,6 @@
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Dictionary;
 
 namespace Content.Shared.VendingMachines
 {
@@ -10,13 +11,13 @@ namespace Content.Shared.VendingMachines
         [IdDataField]
         public string ID { get; } = default!;
 
-        [DataField("startingInventory")]
+        [DataField("startingInventory", customTypeSerializer:typeof(PrototypeIdDictionarySerializer<uint, EntityPrototype>))]
         public Dictionary<string, uint> StartingInventory { get; } = new();
 
-        [DataField("emaggedInventory")]
+        [DataField("emaggedInventory", customTypeSerializer:typeof(PrototypeIdDictionarySerializer<uint, EntityPrototype>))]
         public Dictionary<string, uint>? EmaggedInventory { get; }
 
-        [DataField("contrabandInventory")]
+        [DataField("contrabandInventory", customTypeSerializer:typeof(PrototypeIdDictionarySerializer<uint, EntityPrototype>))]
         public Dictionary<string, uint>? ContrabandInventory { get; }
     }
 }