diff --git a/crates/bindings-csharp/Runtime/Internal/Module.cs b/crates/bindings-csharp/Runtime/Internal/Module.cs
index a57b8fcd3..1c54815b3 100644
--- a/crates/bindings-csharp/Runtime/Internal/Module.cs
+++ b/crates/bindings-csharp/Runtime/Internal/Module.cs
@@ -3,11 +3,18 @@ namespace SpacetimeDB.Internal.Module;
 using SpacetimeDB.BSATN;
 
 [SpacetimeDB.Type]
-public partial struct IndexDef(string name, Runtime.IndexType type, bool isUnique, uint[] columnIds)
+public enum IndexType : byte
+{
+    BTree,
+    Hash,
+}
+
+[SpacetimeDB.Type]
+public partial struct IndexDef(string name, IndexType type, bool isUnique, uint[] columnIds)
 {
     string IndexName = name;
     bool IsUnique = isUnique;
-    Runtime.IndexType Type = type;
+    IndexType Type = type;
     uint[] ColumnIds = columnIds;
 }
 
@@ -177,6 +184,14 @@ public static class FFI
         TypeRegistrar.Module.Tables.Add(T.MakeTableDesc(TypeRegistrar));
     }
 
+    private static byte[] Consume(this SpacetimeDB.Internal.FFI.Buffer buffer)
+    {
+        var len = SpacetimeDB.Internal.FFI._buffer_len(buffer);
+        var result = new byte[len];
+        SpacetimeDB.Internal.FFI._buffer_consume(buffer, result, len);
+        return result;
+    }
+
     public static SpacetimeDB.Internal.FFI.Buffer __describe_module__()
     {
         // replace `module` with a temporary internal module that will register ModuleDef, AlgebraicType and other internal types
diff --git a/crates/bindings-csharp/Runtime/Runtime.cs b/crates/bindings-csharp/Runtime/Runtime.cs
index ca456dfee..446bfbe37 100644
--- a/crates/bindings-csharp/Runtime/Runtime.cs
+++ b/crates/bindings-csharp/Runtime/Runtime.cs
@@ -30,21 +30,6 @@ public class ScheduleToken
 
 public static class Runtime
 {
-    [SpacetimeDB.Type]
-    public enum IndexType : byte
-    {
-        BTree,
-        Hash,
-    }
-
-    internal static byte[] Consume(this FFI.Buffer buffer)
-    {
-        var len = FFI._buffer_len(buffer);
-        var result = new byte[len];
-        FFI._buffer_consume(buffer, result, len);
-        return result;
-    }
-
     public enum LogLevel : byte
     {
         Error,