diff --git a/core/soong_config.mk b/core/soong_config.mk
index 1d35337..72ee2e4 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -346,11 +346,6 @@
 $(call add_json_bool, ArtTargetIncludeDebugBuild, $(PRODUCT_ART_TARGET_INCLUDE_DEBUG_BUILD))
 endif
 
-_config_enable_uffd_gc := \
-  $(firstword $(OVERRIDE_ENABLE_UFFD_GC) $(PRODUCT_ENABLE_UFFD_GC) default)
-$(call add_json_str, EnableUffdGc, $(_config_enable_uffd_gc))
-_config_enable_uffd_gc :=
-
 $(call json_end)
 
 $(file >$(SOONG_VARIABLES).tmp,$(json_contents))
diff --git a/core/soong_extra_config.mk b/core/soong_extra_config.mk
index 82d1b15..e4432d2 100644
--- a/core/soong_extra_config.mk
+++ b/core/soong_extra_config.mk
@@ -48,6 +48,11 @@
 
 $(call add_json_bool, SdkBuild, $(filter sdk sdk_addon,$(MAKECMDGOALS)))
 
+_config_enable_uffd_gc := \
+  $(firstword $(OVERRIDE_ENABLE_UFFD_GC) $(PRODUCT_ENABLE_UFFD_GC) default)
+$(call add_json_str, EnableUffdGc, $(_config_enable_uffd_gc))
+_config_enable_uffd_gc :=
+
 $(call add_json_str, SystemServerCompilerFilter, $(PRODUCT_SYSTEM_SERVER_COMPILER_FILTER))
 
 $(call add_json_bool, Product16KDeveloperOption, $(filter true,$(PRODUCT_16K_DEVELOPER_OPTION)))