diff --git a/core/soong_config.mk b/core/soong_config.mk
index 4b1b99a524..0d5799c6a9 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -226,7 +226,6 @@ $(call add_json_str,  PlatformSepolicyVersion,           $(PLATFORM_SEPOLICY_VER
 $(call add_json_str,  TotSepolicyVersion,                $(TOT_SEPOLICY_VERSION))
 $(call add_json_list, PlatformSepolicyCompatVersions,    $(PLATFORM_SEPOLICY_COMPAT_VERSIONS))
 
-$(call add_json_bool, Flatten_apex,                      $(filter true,$(TARGET_FLATTEN_APEX)))
 $(call add_json_bool, ForceApexSymlinkOptimization,      $(filter true,$(TARGET_FORCE_APEX_SYMLINK_OPTIMIZATION)))
 
 $(call add_json_str,  DexpreoptGlobalConfig,             $(DEX_PREOPT_CONFIG))