diff --git a/htdocs/variants/class/ProductCombination.class.php b/htdocs/variants/class/ProductCombination.class.php
index c4c660e61d8..7d90c1b247d 100644
--- a/htdocs/variants/class/ProductCombination.class.php
+++ b/htdocs/variants/class/ProductCombination.class.php
@@ -602,7 +602,9 @@ class ProductCombination
 		$prodcomb2val = new ProductCombination2ValuePair($this->db);
 		$prodcomb = new ProductCombination($this->db);
 
-		$features = array_filter($features);
+		$features = array_filter($features, function($v) {
+			return !empty($v);
+		});
 
 		foreach ($features as $attr => $attr_val) {
 			$actual_comp[$attr] = $attr_val;