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-rw-r--r--backend.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/backend.php b/backend.php
index 07f3ff17a..2b527cc17 100644
--- a/backend.php
+++ b/backend.php
@@ -1643,7 +1643,7 @@
$feed_link = db_escape_string(trim($_GET["link"]));
$cat_id = db_escape_string($_GET["cid"]);
- if ($cat_id == "0") {
+ if ($cat_id == "0" || !$cat_id) {
$cat_qpart = "NULL";
} else {
$cat_qpart = "'$cat_id'";