diff --git a/core/soong_config.mk b/core/soong_config.mk
index f150660582..bd6cfbb9e6 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -40,6 +40,7 @@ $(call add_json_str,  Platform_preview_sdk_version,      $(PLATFORM_PREVIEW_SDK_
 $(call add_json_str,  Platform_base_os,                  $(PLATFORM_BASE_OS))
 $(call add_json_str,  Platform_version_last_stable,      $(PLATFORM_VERSION_LAST_STABLE))
 $(call add_json_str,  Platform_version_known_codenames,  $(PLATFORM_VERSION_KNOWN_CODENAMES))
+$(call add_json_bool, Release_aidl_use_unfrozen,         $(RELEASE_AIDL_USE_UNFROZEN))
 
 $(call add_json_str,  Platform_min_supported_target_sdk_version, $(PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION))