diff --git a/filter.sh b/filter.sh
index 46be830..d67cd9f 100755
--- a/filter.sh
+++ b/filter.sh
@@ -157,7 +157,7 @@ function get_unread_entries {
 function filter_entries {
     echo "[INFO] Filtering entries..."
     # fuer jede Zeile in $MF_FILTERLIST
-    echo $MF_FILTERLIST | while read -r line; do
+    echo "$MF_FILTERLIST" | while read -r line; do
         if [[ $MF_DEBUG -eq 1 ]]; then
             echo "[DEBUG] set search values"
         fi