diff --git a/core/app_certificate_validate.mk b/core/app_certificate_validate.mk
index 15ddd94..6d3fdc8 100644
--- a/core/app_certificate_validate.mk
+++ b/core/app_certificate_validate.mk
@@ -1,7 +1,5 @@
 
-ifeq (true,$(filter true, \
-   $(LOCAL_PRODUCT_MODULE) $(LOCAL_PRODUCT_SERVICES_MODULE) \
-   $(LOCAL_VENDOR_MODULE) $(LOCAL_PROPRIETARY_MODULE)))
+ifeq (true,$(non_system_module))
   ifneq (,$(filter $(dir $(DEFAULT_SYSTEM_DEV_CERTIFICATE))%,$(LOCAL_CERTIFICATE)))
     CERTIFICATE_VIOLATION_MODULES += $(LOCAL_MODULE)
     ifeq (true,$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_ENFORCE_ARTIFACT_SYSTEM_CERTIFICATE_REQUIREMENT))
diff --git a/core/base_rules.mk b/core/base_rules.mk
index cb9c35a..64e1069 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -96,6 +96,12 @@
 $(call pretty-error,Only one of LOCAL_PROPRIETARY_MODULE[$(LOCAL_PROPRIETARY_MODULE)] and LOCAL_VENDOR_MODULE[$(LOCAL_VENDOR_MODULE)] may be set, or they must be equal)
 endif
 
+non_system_module := $(filter true, \
+   $(LOCAL_PRODUCT_MODULE) \
+   $(LOCAL_PRODUCT_SERVICES_MODULE) \
+   $(LOCAL_VENDOR_MODULE) \
+   $(LOCAL_PROPRIETARY_MODULE))
+
 include $(BUILD_SYSTEM)/local_vndk.mk
 include $(BUILD_SYSTEM)/local_systemsdk.mk
 
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index b47071a..f9e07f8 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -494,6 +494,7 @@
 LOCAL_IS_AUX_MODULE :=
 
 full_android_manifest :=
+non_system_module :=
 
 # Trim MAKEFILE_LIST so that $(call my-dir) doesn't need to
 # iterate over thousands of entries every time.
diff --git a/core/package_internal.mk b/core/package_internal.mk
index 31cb01e..47f790f 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -574,9 +574,7 @@
 # Run veridex on product, product_services and vendor modules.
 # We skip it for unbundled app builds where we cannot build veridex.
 module_run_appcompat :=
-ifeq (true,$(filter true, \
-   $(LOCAL_PRODUCT_MODULE) $(LOCAL_PRODUCT_SERVICES_MODULE) \
-   $(LOCAL_VENDOR_MODULE) $(LOCAL_PROPRIETARY_MODULE)))
+ifeq (true,$(non_system_module))
 ifeq (,$(TARGET_BUILD_APPS)$(filter true,$(TARGET_BUILD_PDK)))  # ! unbundled app build
   module_run_appcompat := true
 endif
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index 960d8d1..56f9004 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -72,9 +72,7 @@
 # Run veridex on product, product_services and vendor modules.
 # We skip it for unbundled app builds where we cannot build veridex.
 module_run_appcompat :=
-ifeq (true,$(filter true, \
-   $(LOCAL_PRODUCT_MODULE) $(LOCAL_PRODUCT_SERVICES_MODULE) \
-   $(LOCAL_VENDOR_MODULE) $(LOCAL_PROPRIETARY_MODULE)))
+ifeq (true,$(non_system_module))
 ifeq (,$(TARGET_BUILD_APPS)$(filter true,$(TARGET_BUILD_PDK)))  # ! unbundled app build
   module_run_appcompat := true
 endif
diff --git a/core/soong_app_prebuilt.mk b/core/soong_app_prebuilt.mk
index eb201e6..a6315b4 100644
--- a/core/soong_app_prebuilt.mk
+++ b/core/soong_app_prebuilt.mk
@@ -44,9 +44,7 @@
 # Run veridex on product, product_services and vendor modules.
 # We skip it for unbundled app builds where we cannot build veridex.
 module_run_appcompat :=
-ifeq (true,$(filter true, \
-   $(LOCAL_PRODUCT_MODULE) $(LOCAL_PRODUCT_SERVICES_MODULE) \
-   $(LOCAL_VENDOR_MODULE) $(LOCAL_PROPRIETARY_MODULE)))
+ifeq (true,$(non_system_module))
 ifeq (,$(TARGET_BUILD_APPS)$(filter true,$(TARGET_BUILD_PDK)))  # ! unbundled app build
   module_run_appcompat := true
 endif