diff --git a/Makefile b/Makefile
index 51ed5a1132..3450f7e297 100644
--- a/Makefile
+++ b/Makefile
@@ -87,9 +87,13 @@ prereq: $(target/stamp-prereq) tmp/.prereq_packages
 checksum: FORCE
 	$(call sha256sums,$(BIN_DIR))
 
+diffconfig: FORCE
+	$(SCRIPT_DIR)/diffconfig.sh > $(BIN_DIR)/config.seed
+
 prepare: .config $(tools/stamp-install) $(toolchain/stamp-install)
 world: prepare $(target/stamp-compile) $(package/stamp-compile) $(package/stamp-install) $(target/stamp-install) FORCE
 	$(_SINGLE)$(SUBMAKE) -r package/index
+	$(_SINGLE)$(SUBMAKE) -r diffconfig
 	$(_SINGLE)$(SUBMAKE) -r checksum
 
 .PHONY: clean dirclean prereq prepare world package/symlinks package/symlinks-install package/symlinks-clean