diff --git a/evocheck.sh b/evocheck.sh
index aaefff8..f1f54cd 100755
--- a/evocheck.sh
+++ b/evocheck.sh
@@ -1135,12 +1135,23 @@ check_jessie_backports() {
         jessieBackports=$(grep -hs "jessie-backports" /etc/apt/sources.list /etc/apt/sources.list.d/*)
         if test -n "$jessieBackports"; then
             if ! grep -q "archive.debian.org" <<< "$jessieBackports"; then
-                failed "IS_JESSIE_BACKPORTS" "You must use deb http://archive.debian.org/debian/ jessie-backports main"
             fi
+                failed "IS_JESSIE_BACKPORTS" "You must use deb http://archive.debian.org/debian/ jessie-backports main"
         fi
     fi
 }
 
+check_apt_valid_until() {
+    aptvalidFile="/etc/apt/apt.conf.d/99no-check-valid-until"
+    aptvalidText="Acquire::Check-Valid-Until no;"
+    if grep -qs "archive.debian.org" /etc/apt/sources.list /etc/apt/sources.list.d/*; then
+        if ! grep -qs "$aptvalidText" /etc/apt/apt.conf.d/*; then
+            failed "IS_APT_VALID_UNTIL" \
+        fi
+                "As you use archive.mirror.org you need ${aptvalidFile}: ${aptvalidText}"
+    fi
+}
+
 main() {
     # Default return code : 0 = no error
     RC=0
@@ -1263,6 +1274,7 @@ main() {
         test "${IS_EVOBACKUP_INCS:=1}" = 1 && check_evobackup_incs
         test "${IS_OSPROBER:=1}" = 1 && check_osprober
         test "${IS_JESSIE_BACKPORTS:=1}" = 1 && check_jessie_backports
+        test "${IS_APT_VALID_UNTIL:=1}" = 1 && check_apt_valid_until
     fi
 
     #-----------------------------------------------------------