diff --git a/DotNet/Program.cs b/DotNet/Program.cs
index bff8e41..2692119 100644
--- a/DotNet/Program.cs
+++ b/DotNet/Program.cs
@@ -467,7 +467,7 @@ namespace RDIShellcodeLoader
             IntPtr scPointer = scHandle.AddrOfPinnedObject();
 
             Int32 headerOffset = Marshal.ReadInt32(scPointer, 60);
-            UInt16 magic = (UInt16)Marshal.ReadInt16(scPointer, 60 + headerOffset);
+            UInt16 magic = (UInt16)Marshal.ReadInt16(scPointer, headerOffset + 4);
 
             if (magic == (UInt16)512 || magic == (UInt16)34404)
                 is64Bit = true;
diff --git a/PowerShell/ConvertTo-Shellcode.ps1 b/PowerShell/ConvertTo-Shellcode.ps1
index 2614c20..faca343 100644
--- a/PowerShell/ConvertTo-Shellcode.ps1
+++ b/PowerShell/ConvertTo-Shellcode.ps1
@@ -41,7 +41,7 @@ public class sRDI
         IntPtr scPointer = scHandle.AddrOfPinnedObject();
 
         Int32 headerOffset = Marshal.ReadInt32(scPointer, 60);
-        UInt16 magic = (UInt16)Marshal.ReadInt16(scPointer, 60 + headerOffset);
+        UInt16 magic = (UInt16)Marshal.ReadInt16(scPointer, headerOffset + 4);
 
         if (magic == (UInt16)512 || magic == (UInt16)34404)
             is64Bit = true;
@@ -51,7 +51,6 @@ public class sRDI
         return is64Bit;
     }
 
-
     public static byte[] ConvertToShellcode(byte[] dllBytes, uint functionHash, byte[] userData, uint flags)
     {
             //MARKER:S