diff --git a/roles/refresh-50ohm/templates/timer.j2 b/roles/refresh-50ohm/templates/timer.j2
index ed7e06c..ecc9764 100644
--- a/roles/refresh-50ohm/templates/timer.j2
+++ b/roles/refresh-50ohm/templates/timer.j2
@@ -3,7 +3,7 @@ Description=Timer for refreshing 50ohm.de
 
 [Timer]
 OnBootSec=5min
-OnUnitAciveSec=15min
+OnUnitActiveSec=15min
 Unit=refresh-50ohm.service
 
 [Install]