1 files changed, 2 insertions, 2 deletions
diff --git a/bin/batman b/bin/batman
index 9928931..2d44682 100755
--- a/bin/batman
+++ b/bin/batman
@@ -16,7 +16,7 @@ batmobile() {
 				MSG="Battery charged at $BATVAL% with status \"$BATSTATE\", no shutdown."
 				[ ! -z "$VOERBOOS" ]&&[ "$VOERBOOS" -eq 1 ]&&echo "$MSG"
 				LMSG="Battery charged at $BATVAL% with status \"$BATSTATE\", no shutdown."
-				logger -p"info" -t"batman" "$LMSG"||RETVAL=$(("$RETVAL"+$?))
+				logger -p"info" -t"batman" "$LMSG"||RETVAL=$((RETVAL+"$?"))
 				unset LMSG
 				[ -e "$BATFILE" ]&&/usr/sbin/shutdown -c >/dev/null 2>&1&&rm "$BATFILE"
 				SDCRV="$?"
@@ -26,7 +26,7 @@ batmobile() {
 						LMSG="batman" "$BATFILE exists but couldn't cancel shutdown!"
 						logger -p"warn" -t"$LMSG"
 						unset LMSG
-						RETVAL=$(("$RETVAL"+"$SDCRV"))
+						RETVAL=$((RETVAL+SDCRV))
 					;;
 				esac
 			;;