diff --git a/src/crontab b/src/crontab
index ded9510..20da2cd 100644
--- a/src/crontab
+++ b/src/crontab
@@ -1,2 +1,2 @@
-10 2 * * * source /env.sh && /backup.sh && rcb cleanup > /proc/1/fd/1
+10 2 * * * . /env.sh && /backup.sh && rcb cleanup > /proc/1/fd/1
 
diff --git a/src/restic_compose_backup/config.py b/src/restic_compose_backup/config.py
index 2229092..749e84a 100644
--- a/src/restic_compose_backup/config.py
+++ b/src/restic_compose_backup/config.py
@@ -2,7 +2,7 @@ import os
 
 
 class Config:
-    default_backup_command = "source /env.sh && /backup.sh && rcb cleanup > /proc/1/fd/1"
+    default_backup_command = ". /env.sh && /backup.sh && rcb cleanup > /proc/1/fd/1"
     default_crontab_schedule = "0 2 * * *"
 
     """Bag for config values"""