diff --git a/CHANGELOG.md b/CHANGELOG.md
index 749421f82..b3dcb152c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## 0.0.12
 - Convert OpenCore-Patcher binary to OpenCore-Patcher.app
 - Add Backlight patches for modded Nvidia GPUs in iMac10,x-12,x
+- Fix sleep for iMac12,x with upgraded GPUs
 
 ## 0.0.11
 - Re-add OpenCore GUI
diff --git a/Resources/build.py b/Resources/build.py
index b4a3a0c0f..fd54f304a 100644
--- a/Resources/build.py
+++ b/Resources/build.py
@@ -160,6 +160,9 @@ class BuildOpenCore:
                 self.constants.custom_mxm_gpu = True
                 print("- Adding AMD DRM patches")
                 self.config["NVRAM"]["Add"]["7C436110-AB2A-4BBB-A880-FE41995C9F82"]["boot-args"] += " shikigva=80 unfairgva=1"
+                if self.model in ["iMac12,1", "iMac12,2"]:
+                    print("- Disabling unsupported iGPU")
+                    self.config["DeviceProperties"]["Add"]["PciRoot(0x0)/Pci(0x2,0x0)"] = {"name": binascii.unhexlify("23646973706C6179"), "IOName": "#display", "class-code": binascii.unhexlify("FFFFFFFF")}
             elif (self.constants.current_gpuv == "NVIDIA (0x10de)") & (self.constants.current_gpud in ModelArray.NVIDIAMXMGPUs):
                 self.constants.custom_mxm_gpu = True
                 print("- Adding Brightness Control patches")
@@ -171,6 +174,8 @@ class BuildOpenCore:
                 elif self.model in ["iMac12,1", "iMac12,2"]:
                     backlight_path = "PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)"
                     self.config["DeviceProperties"]["Add"][backlight_path] = {"@0,backlight-control": binascii.unhexlify("01000000"), "@0,built-in": binascii.unhexlify("01000000")}
+                    print("- Disabling unsupported iGPU")
+                    self.config["DeviceProperties"]["Add"]["PciRoot(0x0)/Pci(0x2,0x0)"] = {"name": binascii.unhexlify("23646973706C6179"), "IOName": "#display", "class-code": binascii.unhexlify("FFFFFFFF")}
 
         # Add OpenCanopy
         print("- Adding OpenCanopy GUI")
diff --git a/payloads/Config/v0.6.7/config.plist b/payloads/Config/v0.6.7/config.plist
index c258642fc..b5fc5f040 100644
--- a/payloads/Config/v0.6.7/config.plist
+++ b/payloads/Config/v0.6.7/config.plist
@@ -172,15 +172,7 @@
 	<key>DeviceProperties</key>
 	<dict>
 		<key>Add</key>
-		<dict>
-			<key>#PciRoot(0x0)/Pci(0x1C,0x1)/Pci(0x0,0x0)</key>
-			<dict>
-				<key>device-id</key>
-				<data>ukMAAA==</data>
-				<key>compatible</key>
-				<string>pci14e4,43ba</string>
-			</dict>
-		</dict>
+		<dict/>
 		<key>Delete</key>
 		<dict/>
 	</dict>