diff --git a/evocheck.sh b/evocheck.sh
index c8e3da1..91da52b 100755
--- a/evocheck.sh
+++ b/evocheck.sh
@@ -564,7 +564,7 @@ if [ -e /etc/debian_version ]; then
     if [ "$IS_BACKPORTSCONF" = 1 ]; then
         if is_debianversion stretch; then
             grep -q backports /etc/apt/sources.list && echo 'IS_BACKPORTSCONF FAILED!'
-            grep -q backports /etc/apt/sources.list.d/*.list && (grep -q backports /etc/apt/preferences.d/* || echo 'IS_BACKPORTSCONF FAILED!')
+            grep -q backports /etc/apt/sources.list.d/*.list 2>/dev/null && (grep -q backports /etc/apt/preferences.d/* || echo 'IS_BACKPORTSCONF FAILED!')
         fi
     fi