diff --git a/core/soong_config.mk b/core/soong_config.mk
index 5bcdfce..e5b05a5 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -315,6 +315,8 @@
 $(call add_json_str, ReleaseAconfigValueSets,    $(RELEASE_ACONFIG_VALUE_SETS))
 $(call add_json_str, ReleaseAconfigFlagDefaultPermission,    $(RELEASE_ACONFIG_FLAG_DEFAULT_PERMISSION))
 
+$(call add_json_bool, ReleaseDefaultModuleBuildFromSource,   $(RELEASE_DEFAULT_MODULE_BUILD_FROM_SOURCE))
+
 $(call add_json_bool, KeepVndk, $(filter true,$(KEEP_VNDK)))
 
 $(call add_json_bool, CheckVendorSeappViolations, $(filter true,$(CHECK_VENDOR_SEAPP_VIOLATIONS)))