diff --git a/compatibility_matrices/Android.mk b/compatibility_matrices/Android.mk
index dd7165d..23be7de 100644
--- a/compatibility_matrices/Android.mk
+++ b/compatibility_matrices/Android.mk
@@ -127,6 +127,14 @@
 
 LOCAL_ASSEMBLE_VINTF_ENV_VARS := PRODUCT_ENFORCE_VINTF_MANIFEST
 
+# TODO(b/65028233): Enforce no "unused HALs" for devices that does not define
+# DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE as well
+ifeq (true,$(strip $(PRODUCT_ENFORCE_VINTF_MANIFEST)))
+ifdef DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE
+LOCAL_ASSEMBLE_VINTF_ENV_VARS_OVERRIDE := VINTF_ENFORCE_NO_UNUSED_HALS=true
+endif
+endif
+
 include $(BUILD_FRAMEWORK_COMPATIBILITY_MATRIX)
 BUILT_SYSTEM_COMPATIBILITY_MATRIX := $(LOCAL_BUILT_MODULE)