diff --git a/make/upload-defs.mk b/make/upload-defs.mk
index 9de30feb..11ecdd64 100644
--- a/make/upload-defs.mk
+++ b/make/upload-defs.mk
@@ -11,7 +11,8 @@ UPLOAD_FILES_ROOT           ?= /srv/dav/pub/clients/$(JANWARE_CLIENT)
 #UPLOAD_TEST_PREFIX         ?=
 UPLOAD_MODULE_PATH          ?= $(UPLOAD_TEST_PREFIX)proj/$(UPLOAD_MODULE)
 UPLOAD_MODULE_ROOT          ?= $(UPLOAD_FILES_ROOT)/$(UPLOAD_MODULE_PATH)
-UPLOAD_TARGET_PREFIX        ?= rsync_ssh://$(UPLOAD_HOST_LOGIN)@$(UPLOAD_HOST):$(UPLOAD_MODULE_ROOT)/
+UPLOAD_PROTOCOL             ?= rsync_ssh
+UPLOAD_TARGET_PREFIX        ?= $(UPLOAD_PROTOCOL)://$(UPLOAD_HOST_LOGIN)@$(UPLOAD_HOST):$(UPLOAD_MODULE_ROOT)/
 #UPLOAD_FILES               ?=
 REMOTE_TARGETS              ?= \
 	$(foreach f,$(notdir $(UPLOAD_FILES)),$(UPLOAD_TARGET_PREFIX)$f:$(UPLOAD_FILE_MODE):$(UPLOAD_DIR_MODE):$(UPLOAD_USER).$(UPLOAD_GROUP))