diff --git a/.g14control.sh.swp b/.g14control.sh.swp
new file mode 100644
index 0000000..bd09bd4
Binary files /dev/null and b/.g14control.sh.swp differ
diff --git a/g14control.sh b/g14control.sh
index d88d347..74e405d 100755
--- a/g14control.sh
+++ b/g14control.sh
@@ -29,14 +29,18 @@ disp() {
 	STEP=$((MAX/10))
 	CURRLEVEL=$(cat ${INTERFACE})
 
-	if [[ ${1} =~ ^[0-9]{1,${#MAX}}$ && ! ${1} > ${MAX} ]]; then
-		LEVEL=${1}
-	elif [[ ${1} == "up" && ${CURRLEVEL} < ${MAX} ]]; then
+	if [[ ${1} == "up" ]]; then
 		[[ $((CURRLEVEL+STEP)) > ${MAX} ]] && \
-			LEVEL=${MAX} || LEVEL=$((CURRLEVEL+STEP))
-	else [[ ${1} == "down" && ${CURRLEVEL} > 0 ]]
+			LEVEL=${MAX} || \
+		[[ ${CURRLEVEL} < ${MAX} ]] && \
+			LEVEL=$((CURRLEVEL+STEP))
+	elif [[ ${1} == "down" ]]; then
 		[[ $((CURRLEVEL-STEP)) < 0 ]] && \
-			LEVEL=0 || LEVEL=$((CURRLEVEL-STEP))
+			LEVEL=0 ||
+		[[ ${CURRLEVEL} > 0 ]] && \
+			LEVEL=$((CURRLEVEL-STEP))
+	elif [[ ${1} =~ ^[0-9]{1,${#MAX}}$ && ! ${1} > ${MAX} ]]; then
+		LEVEL=${1}
 	fi
 
 	echo ${LEVEL} > ${INTERFACE}