diff --git a/core/Makefile b/core/Makefile
index 311b555192..06dd3db0d6 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1314,7 +1314,6 @@ INTERNAL_SYSTEMIMAGE_FILES := $(filter $(TARGET_OUT)/%, \
     $(PDK_FUSION_SYSIMG_FILES) \
     $(RECOVERY_RESOURCE_ZIP))
 
-
 FULL_SYSTEMIMAGE_DEPS := $(INTERNAL_SYSTEMIMAGE_FILES) $(INTERNAL_USERIMAGES_DEPS)
 
 # ASAN libraries in the system image - add dependency.
@@ -1436,6 +1435,9 @@ $(warning Warning: with dexpreopt enabled, you may need a full rebuild.)
 endif
 endif
 
+.PHONY: sync
+sync: $(INTERNAL_SYSTEMIMAGE_FILES)
+
 #######
 ## system tarball
 define build-systemtarball-target
@@ -1818,6 +1820,8 @@ $(INSTALLED_VENDORIMAGE_TARGET): $(INTERNAL_USERIMAGES_DEPS) $(INTERNAL_VENDORIM
 vendorimage-nodeps vnod: | $(INTERNAL_USERIMAGES_DEPS) $(DEPMOD)
 	$(build-vendorimage-target)
 
+sync: $(INTERNAL_VENDORIMAGE_FILES)
+
 else ifdef BOARD_PREBUILT_VENDORIMAGE
 INSTALLED_VENDORIMAGE_TARGET := $(PRODUCT_OUT)/vendor.img
 $(eval $(call copy-one-file,$(BOARD_PREBUILT_VENDORIMAGE),$(INSTALLED_VENDORIMAGE_TARGET)))