diff --git a/checks/check_hddtemp.sh b/checks/check_hddtemp.sh
index 5c215dd..3269c20 100755
--- a/checks/check_hddtemp.sh
+++ b/checks/check_hddtemp.sh
@@ -20,6 +20,7 @@ HDDTEMP="$(type -P hddtemp)"
 PARAMETER="$*"
 WARNING="40"
 CRITICAL="45"
+UNIT="c"
 
 function hilfetext(){
 	cat <<- EOF
@@ -27,17 +28,20 @@ function hilfetext(){
 	$(basename "$0") [OPTION...] 
 	  Options:
 	  -d | --device
+	       --fahrenheit
+	       --celsius (default)
 	  -w | --warning (default: 40)
 	  -c | --critical (default: 50)
 	  -p | --perfdata
 	  -h | --help
 
+
 	EOF
 }
 
 function ParameterEvaluation(){
 
-	options=$(getopt -o c:d:hpw: --long critical: --long device: --long help --long perfdata --long warning: -- "$@")
+	options=$(getopt -o c:d:hpw: --long fahrenheit --long celsius --long critical: --long device: --long help --long perfdata --long warning: -- "$@")
 
 	#Option nicht verfügbar
 	[ "$?" -eq "0" ] || {
@@ -52,6 +56,12 @@ function ParameterEvaluation(){
 				shift; # The arg is next in position args
 				DEVICE="$1"
 			;;
+			"--celsius")
+				UNIT="c"
+			;;
+			"--fahrenheit")
+				UNIT="f"
+			;;
 			"-w"|"--warning")
 				shift; # The arg is next in position args
 				WARNING="$1"
@@ -67,7 +77,7 @@ function ParameterEvaluation(){
 				hilfetext
 				exit 0
 			;;
-			
+
 			"--")
 				shift
 				break
@@ -96,7 +106,7 @@ ParameterEvaluation "$0" "$@"
 #Debug
 #echo -e "WARNING:\t\"$WARNING\""
 #echo -e "CRITICAL:\t\"$CRITICAL\""
-#echo -e "DEVICE:\t\t\"$DEVICE\""
+echo -e "DEVICE:\t\t\"$DEVICE\""
 #echo -e "HELP\t\t\"$HELP\""
 #echo -e "PERFDATA\t\t\"$PERFDATA\""
 #echo -e "Alle Args:\t\"$@\""
@@ -115,7 +125,14 @@ then
 	exit 1
 fi
 
-RESULT=$($HDDTEMP $DEVICE)
+if [ "$UNIT" = "c" ]
+then
+	RESULT=$($HDDTEMP --unit=C $DEVICE)
+elif [ "$UNIT" = "f" ]
+then
+	RESULT=$($HDDTEMP --unit=F $DEVICE)
+fi
+
 OUTDEV=$(echo "$RESULT" | awk -F: '{print $1}')
 OUTMODEL=$(echo "$RESULT" | awk -F: '{print $2}' | tr -cd '[:print:]')
 OUTTEMP=$(echo "$RESULT" | awk -F: '{print $3}')