diff --git a/Changelog.md b/Changelog.md
index 26e34a2a..fff61894 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -5,6 +5,7 @@ WhateverGreen Changelog
 - Added the backlight smoother submodule that makes brightness transitions smoother on Intel IVB+ platforms. (by @0xFireWolf)
 - MMIO Register Access submodules are now available on Intel IVB+ platforms. (by @0xFireWolf)
 - Improved ASUS-made AMD R9 380 GPU identification
+- Fixed `applbkl` property with `<00 00 00 00>` value failing to disable backlight patches
 - *Note:* This release requires Lilu v1.5.6 or later.
 
 #### v1.5.2
diff --git a/WhateverGreen/kern_weg.cpp b/WhateverGreen/kern_weg.cpp
index b9056620..ff99f15e 100644
--- a/WhateverGreen/kern_weg.cpp
+++ b/WhateverGreen/kern_weg.cpp
@@ -242,7 +242,8 @@ void WEG::processKernel(KernelPatcher &patcher) {
 			}
 
 			// Note, disabled Optimus will make videoExternal 0, so this case checks for active IGPU only.
-			if (appleBacklightPatch == APPLBKL_DETECT && (devInfo->videoBuiltin == nullptr || extNum > 0)) {
+			DBGLOG("weg", "resulting applbkl value is %d", appleBacklightPatch);
+			if (appleBacklightPatch == APPLBKL_OFF || (appleBacklightPatch == APPLBKL_DETECT && (devInfo->videoBuiltin == nullptr || extNum > 0))) {
 				// Either a builtin IGPU is not available, or some external GPU is available.
 				kextBacklight.switchOff();
 			}