diff --git a/filter.sh b/filter.sh
index 636287d..3d6105b 100755
--- a/filter.sh
+++ b/filter.sh
@@ -185,7 +185,7 @@ function filter_entries {
                 marked_entries+=" $(echo "$unread_entries" | jq --arg url "$url" --arg suchbegriff "$suchbegriff" '.entries[] | select(.feed.site_url | ascii_downcase | contains($url)) | select(.content | ascii_downcase | contains($suchbegriff)) | .id' )"
             fi
         fi
-    done < "$MF_FILTERLIST"
+    done < <($MF_FILTERLIST)
 }
 function mark_as_read {
     # https://stackoverflow.com/questions/3869072/test-for-non-zero-length-string-in-bash-n-var-or-var