diff --git a/Source/OpenTK.Rewrite/Program.cs b/Source/OpenTK.Rewrite/Program.cs
index 2f3b59ea..bae00913 100644
--- a/Source/OpenTK.Rewrite/Program.cs
+++ b/Source/OpenTK.Rewrite/Program.cs
@@ -435,7 +435,6 @@ namespace OpenTK.Rewrite
                     int index = body.Variables.Count - 1;
 
                     // ptr = Marshal.AllocHGlobal(sb.Capacity + 1);
-                    il.Emit(OpCodes.Ldarg, i);
                     il.Emit(OpCodes.Callvirt, sb_get_capacity);
                     il.Emit(OpCodes.Call, alloc_hglobal);
                     il.Emit(OpCodes.Stloc, index);