diff --git a/core/soong_config.mk b/core/soong_config.mk
index feffcc7bba..c4a40af0c7 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -293,6 +293,8 @@ $(call add_json_list, SepolicyFreezeTestExtraPrebuiltDirs, $(SEPOLICY_FREEZE_TES
 
 $(call add_json_bool, GenerateAidlNdkPlatformBackend, $(filter true,$(NEED_AIDL_NDK_PLATFORM_BACKEND)))
 
+$(call add_json_bool, IgnorePrefer32OnDevice, $(filter true,$(IGNORE_PREFER32_ON_DEVICE)))
+
 $(call json_end)
 
 $(file >$(SOONG_VARIABLES).tmp,$(json_contents))