diff --git a/core/binary.mk b/core/binary.mk
index d3b536d..4e52e35 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -730,8 +730,9 @@
 	$(transform-aidl-to-cpp)
 -include $(addsuffix .P,$(basename $(aidl_gen_cpp)))
 
-# Add generated headers to include path.
+# Add generated headers to include paths.
 my_c_includes += $(aidl_gen_include_root)
+my_export_c_include_dirs += $(aidl_gen_include_root)
 # Pick up the generated C++ files later for transformation to .o files.
 my_generated_sources += $(aidl_gen_cpp)