diff --git a/unit-files/backup@.service b/unit-files/backup@.service
index 294c0b9fd22c4be802efd2cc02630f504de2e432..b474905defa03b2c77a3bfcd138a4b971eb0cdba 100644
--- a/unit-files/backup@.service
+++ b/unit-files/backup@.service
@@ -24,5 +24,5 @@ ExecStart=/bin/bash -euxc ' \
   cd /data/domains/%i/; \
   git add *; \
   git status; \
-  git commit --allow-empty -m"backup %i @ `hostname` - `date`"; \
+  git commit --allow-empty -am"backup %i @ `hostname` - `date`"; \
   git push origin master'