diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk
index a810fd9..6f18df8 100644
--- a/build/tasks/kernel.mk
+++ b/build/tasks/kernel.mk
@@ -1,5 +1,5 @@
 # Copyright (C) 2012 The CyanogenMod Project
-#           (C) 2017-2020 The LineageOS Project
+#           (C) 2017-2021 The LineageOS Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -61,6 +61,9 @@
 #                                          modules in system instead of vendor
 #   NEED_KERNEL_MODULE_VENDOR_OVERLAY  = Optional, if true, install kernel
 #                                          modules in vendor_overlay instead of vendor
+#
+#   TARGET_FORCE_PREBUILT_KERNEL       = Optional, use TARGET_PREBUILT_KERNEL even if
+#                                          kernel sources are present
 
 ifneq ($(TARGET_NO_KERNEL),true)
 ifneq ($(TARGET_NO_KERNEL_OVERRIDE),true)
@@ -153,8 +156,27 @@
         $(warning **********************************************************)
         $(error "NO KERNEL CONFIG")
     else
-        FULL_KERNEL_BUILD := true
-        KERNEL_BIN := $(TARGET_PREBUILT_INT_KERNEL)
+        ifeq ($(filter RELEASE NIGHTLY SNAPSHOT EXPERIMENTAL,$(LINEAGE_BUILDTYPE)),)
+            $(error "PREBUILT KERNEL IS NOT ALLOWED ON OFFICIAL BUILDS!")
+        else
+            ifneq ($(TARGET_FORCE_PREBUILT_KERNEL),)
+                $(warning **********************************************************)
+                $(warning * Kernel source found and configuration was defined,     *)
+                $(warning * but prebuilt kernel is being forced.                   *)
+                $(warning * While this is likely intentional,                      *)
+                $(warning * it is NOT SUPPORTED WHATSOEVER.                        *)
+                $(warning * Generated kernel headers may not align with            *)
+                $(warning * the ABI of kernel you're including.                    *)
+                $(warning * Please unset TARGET_FORCE_PREBUILT_KERNEL              *)
+                $(warning * to build the kernel from source.                       *)
+                $(warning **********************************************************)
+                FULL_KERNEL_BUILD := false
+                KERNEL_BIN := $(TARGET_PREBUILT_KERNEL)
+            else
+                FULL_KERNEL_BUILD := true
+                KERNEL_BIN := $(TARGET_PREBUILT_INT_KERNEL)
+            endif
+        endif
     endif
 endif
 
diff --git a/config/BoardConfigKernel.mk b/config/BoardConfigKernel.mk
index 3037d91..5ffe3e0 100644
--- a/config/BoardConfigKernel.mk
+++ b/config/BoardConfigKernel.mk
@@ -42,9 +42,6 @@
 
 TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g')
 TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR)
-ifneq ($(TARGET_PREBUILT_KERNEL),)
-TARGET_KERNEL_SOURCE :=
-endif
 
 TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
 ifeq ($(TARGET_KERNEL_ARCH),)