diff --git a/AndroidKernel.mk b/AndroidKernel.mk
index 56e752040a19..35d3573210c6 100644
--- a/AndroidKernel.mk
+++ b/AndroidKernel.mk
@@ -28,6 +28,10 @@ $(warning Forcing kernel header generation only for '$(TARGET_KERNEL_HEADER_ARCH
 KERNEL_HEADER_ARCH := $(TARGET_KERNEL_HEADER_ARCH)
 endif
 
+ifeq ($(shell echo $(KERNEL_DEFCONFIG) | grep vendor),)
+KERNEL_DEFCONFIG := vendor/$(KERNEL_DEFCONFIG)
+endif
+
 KERNEL_HEADER_DEFCONFIG := $(strip $(KERNEL_HEADER_DEFCONFIG))
 ifeq ($(KERNEL_HEADER_DEFCONFIG),)
 KERNEL_HEADER_DEFCONFIG := $(KERNEL_DEFCONFIG)