diff --git a/frogg_ssl_check.sh b/frogg_ssl_check.sh
index abe7000..2d7e002 100755
--- a/frogg_ssl_check.sh
+++ b/frogg_ssl_check.sh
@@ -95,12 +95,17 @@ timeout 5 bash -c \
 # @return number of days left as int
 function getSSLExpireDayLeft()
 {
-# Get expire date
-EXPIRE=$(date -d "$(echo "QUIT" | openssl s_client -connect $1:$2 -servername $1 2>/dev/null | openssl x509 -text 2>/dev/null | grep 'Not After' | awk '{print $4,$5,$7}')" +%s);
-# Get today as
-TODAY=$(date +%s);
-# Return diff between expire and today
-echo $((($EXPIRE - $TODAY)/(3600*24)))
+    # Get expire date
+    EXPIRE=$(echo | openssl s_client -connect $1:$2 -servername $1 2>/dev/null \
+    | openssl x509 -noout -enddate \
+    | cut -d= -f2 \
+    | xargs -I{} date -d "{}" +%s)
+
+    # Get today
+    TODAY=$(date +%s)
+
+    # get diff as float
+    echo "$EXPIRE $TODAY" | awk '{printf "%.3f jours\n", ($1-$2)/86400}'
 }
 
 # ---