diff --git a/include/package.mk b/include/package.mk
index f228de2bcf..3e2944fbdc 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -18,7 +18,7 @@ include $(INCLUDE_DIR)/package-defaults.mk
 include $(INCLUDE_DIR)/package-dumpinfo.mk
 include $(INCLUDE_DIR)/package-ipkg.mk
 
-STAMP_PREPARED:=$(PKG_BUILD_DIR)/.prepared_$(shell find ${CURDIR} $(PKG_FILE_DEPEND) $(DEP_FINDPARAMS) | md5s)
+STAMP_PREPARED:=$(PKG_BUILD_DIR)/.prepared$(if $(DUMP),,_$(shell find ${CURDIR} $(PKG_FILE_DEPEND) $(DEP_FINDPARAMS) | md5s))
 STAMP_CONFIGURED:=$(PKG_BUILD_DIR)/.configured
 STAMP_BUILT:=$(PKG_BUILD_DIR)/.built
 export CONFIG_SITE:=$(INCLUDE_DIR)/site/$(REAL_GNU_TARGET_NAME)