diff --git a/src/scripts/update.sh b/src/scripts/update.sh
index 6843023f2..2eb31a9ac 100755
--- a/src/scripts/update.sh
+++ b/src/scripts/update.sh
@@ -40,6 +40,6 @@ if ! systemd-run --property=OOMScoreAdjust=-1000 --unit "${updater_service}" --w
 fi
 
 # if the install script succeeded, the following code is never run since this script will get killed
-exit_code=$(systemctl show "${service_name}" -p ExecMainCode | sed 's/ExecMainCode=//g')
+exit_code=$(systemctl show "${updater_service}" -p ExecMainCode | sed 's/ExecMainCode=//g')
 echo "${updater_service} finished with exit code ${exit_code}"
 exit "${exit_code}"