diff --git a/core/config.mk b/core/config.mk
index 0ecee8a..0cf7eb9 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -811,6 +811,12 @@
   BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED ?= true
 endif
 
+ifneq ($(call math_gt_or_eq,$(PRODUCT_SHIPPING_API_LEVEL),36),)
+  ifneq ($(NEED_AIDL_NDK_PLATFORM_BACKEND),)
+    $(error Must not set NEED_AIDL_NDK_PLATFORM_BACKEND, but it is set to: $(NEED_AIDL_NDK_PLATFORM_BACKEND). Support will be removed.)
+  endif
+endif
+
 # Set BOARD_SYSTEMSDK_VERSIONS to the latest SystemSDK version starting from P-launching
 # devices if unset.
 ifndef BOARD_SYSTEMSDK_VERSIONS