diff --git a/core/Makefile b/core/Makefile
index 5d4a283..237245b 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -42,6 +42,8 @@
 ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_DEFAULT_PROP_TARGET)
 ADDITIONAL_DEFAULT_PROPERTIES := \
 	$(call collapse-pairs, $(ADDITIONAL_DEFAULT_PROPERTIES))
+ADDITIONAL_DEFAULT_PROPERTIES += \
+	$(call collapse-pairs, $(PRODUCT_DEFAULT_PROPERTY_OVERRIDES))
 
 $(INSTALLED_DEFAULT_PROP_TARGET):
 	@echo Target buildinfo: $@
diff --git a/core/product.mk b/core/product.mk
index e37c2c9..2efc446 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -69,6 +69,7 @@
     PRODUCT_MANUFACTURER \
     PRODUCT_BRAND \
     PRODUCT_PROPERTY_OVERRIDES \
+    PRODUCT_DEFAULT_PROPERTY_OVERRIDES \
     PRODUCT_CHARACTERISTICS \
     PRODUCT_COPY_FILES \
     PRODUCT_OTA_PUBLIC_KEYS \
diff --git a/core/product_config.mk b/core/product_config.mk
index df5d30e..6dc8221 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -274,6 +274,12 @@
 PRODUCT_PROPERTY_OVERRIDES := \
 	$(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_PROPERTY_OVERRIDES))
 
+# A list of property assignments, like "key = value", with zero or more
+# whitespace characters on either side of the '='.
+# used for adding properties to default.prop
+PRODUCT_DEFAULT_PROPERTY_OVERRIDES := \
+	$(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_DEFAULT_PROPERTY_OVERRIDES))
+
 # Should we use the default resources or add any product specific overlays
 PRODUCT_PACKAGE_OVERLAYS := \
 	$(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_PACKAGE_OVERLAYS))