diff --git a/README.md b/README.md
index 8313005..85755d0 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,8 @@ Please see the **specific ACPI section of your config.plist**, all SSDTs needed
 * [SSDT AWAC](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-AWAC.dsl)
 * [SSDT-PMC](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-PMC.dsl)
 
+**AMD:**
+* [SSDT-EC-USBX](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-EC-USBX.dsl)
 
 ### High End Desktop
 
diff --git a/extra-files/SSDT-GPU-SPOOF.dsl b/extra-files/SSDT-GPU-SPOOF.dsl
index a996eed..55a6811 100644
--- a/extra-files/SSDT-GPU-SPOOF.dsl
+++ b/extra-files/SSDT-GPU-SPOOF.dsl
@@ -33,7 +33,11 @@ DefinitionBlock ("", "SSDT", 2, "ACDT", "AMDGPU", 0x00001000)
              DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
              Return (Local0)
            }
-         }
+          Else
+          {
+               Return (Zero)
+          }
+        }
     }
     Scope (\_SB.PCI0)
     {                   
diff --git a/extra-files/SSDT-GPU-SPOOF.dsl.zip b/extra-files/SSDT-GPU-SPOOF.dsl.zip
index 3ca29bc..68cb029 100644
Binary files a/extra-files/SSDT-GPU-SPOOF.dsl.zip and b/extra-files/SSDT-GPU-SPOOF.dsl.zip differ