diff --git a/Makefile b/Makefile
index 2dbcbface..0dc127e75 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@ exclude_files :=	config/database.yml \
 			*.o \
 			*.a
 
-version = $(shell git describe --tags --exact 2>/dev/null || { git describe --tags | sed -E 's/-([0-9]+)-[^-]*$$/+\1/'; })
+version = $(shell ./ci/gen_version.sh)
 debian_version = $(shell echo $(version) | sed 's/_/~/' | sed 's/-master/~master/' | sed 's/-rc/~rc/')-1
 commit = $(shell git rev-parse HEAD)
 
diff --git a/ci/gen_version.sh b/ci/gen_version.sh
new file mode 100755
index 000000000..eec78878f
--- /dev/null
+++ b/ci/gen_version.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+if git describe --tags --exact &>/dev/null; then
+	git describe --tags --exact | sed 's/$/+nightly0/'
+else
+	git describe --tags | sed -E 's/-([0-9]+)-[^-]*$/+nightly\1/'
+fi