--- /etc/cron.daily/apt-compat	2016-10-31 15:31:39.000000000 +0100
+++ apt-compat-3	2018-01-10 08:06:05.394749441 +0100
@@ -17,15 +17,11 @@
     #       0 (true)    System is on main power
     #       1 (false)   System is not on main power
     #       255 (false) Power status could not be determined
     # Desktop systems always return 255 it seems
     if which on_ac_power >/dev/null 2>&1; then
-        on_ac_power
-        POWER=$?
-        if [ $POWER -eq 1 ]; then
-            return 1
-        fi
+        on_ac_power || [ $? -ne 1 ] || return 1
     fi
     return 0
 }
 
 # sleep for a random interval of time (default 30min)