diff --git a/core/combo/TARGET_linux-aarch64.mk b/core/combo/TARGET_linux-aarch64.mk
index d8a64c5a2e..50996eb652 100644
--- a/core/combo/TARGET_linux-aarch64.mk
+++ b/core/combo/TARGET_linux-aarch64.mk
@@ -133,17 +133,8 @@ libthread_db_root := bionic/libthread_db
 TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
 	-print-libgcc-file-name)
 
-# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
-# symlinks located in out/ to point to the appropriate kernel
-# headers. see 'config/kernel_headers.make' for more details
-#
-ifneq ($(CUSTOM_KERNEL_HEADERS),)
-    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
-    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
-else
-    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
-    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
-endif
+KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
+KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
 
 TARGET_C_INCLUDES := \
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index a946b23a10..3b95c5c6ad 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -195,17 +195,8 @@ else
 endif
 
 
-# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
-# symlinks located in out/ to point to the appropriate kernel
-# headers. see 'config/kernel_headers.make' for more details
-#
-ifneq ($(CUSTOM_KERNEL_HEADERS),)
-    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
-    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
-else
-    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
-    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
-endif
+KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
+KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
 
 TARGET_C_INCLUDES := \
diff --git a/core/combo/TARGET_linux-mips.mk b/core/combo/TARGET_linux-mips.mk
index a482cc4ac7..e43f7ce3b2 100644
--- a/core/combo/TARGET_linux-mips.mk
+++ b/core/combo/TARGET_linux-mips.mk
@@ -186,17 +186,8 @@ else
 endif
 
 
-# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
-# symlinks located in out/ to point to the appropriate kernel
-# headers. see 'config/kernel_headers.make' for more details
-#
-ifneq ($(CUSTOM_KERNEL_HEADERS),)
-    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
-    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
-else
-    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
-    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
-endif
+KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
+KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
 
 TARGET_C_INCLUDES := \
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index 90f44bdd8f..56c4335738 100755
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -102,17 +102,8 @@ else
   endif
 endif
 
-# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
-# symlinks located in out/ to point to the appropriate kernel
-# headers. see 'config/kernel_headers.make' for more details
-#
-ifneq ($(CUSTOM_KERNEL_HEADERS),)
-    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
-    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
-else
-    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
-    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
-endif
+KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
+KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
 
 android_config_h := $(call select-android-config-h,target_linux-x86)
diff --git a/core/combo/TARGET_linux-x86_64.mk b/core/combo/TARGET_linux-x86_64.mk
index 1ad48c8bf1..dd1906969d 100755
--- a/core/combo/TARGET_linux-x86_64.mk
+++ b/core/combo/TARGET_linux-x86_64.mk
@@ -104,17 +104,8 @@ else
   endif
 endif
 
-# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
-# symlinks located in out/ to point to the appropriate kernel
-# headers. see 'config/kernel_headers.make' for more details
-#
-ifneq ($(CUSTOM_KERNEL_HEADERS),)
-    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
-    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
-else
-    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
-    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-x86 # x86 covers both x86 and x86_64.
-endif
+KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
+KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-x86 # x86 covers both x86 and x86_64.
 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
 
 TARGET_GLOBAL_CFLAGS += \