diff --git a/htdocs/variants/class/ProductCombination.class.php b/htdocs/variants/class/ProductCombination.class.php
index ac9d5403671..c4c660e61d8 100644
--- a/htdocs/variants/class/ProductCombination.class.php
+++ b/htdocs/variants/class/ProductCombination.class.php
@@ -602,6 +602,8 @@ class ProductCombination
 		$prodcomb2val = new ProductCombination2ValuePair($this->db);
 		$prodcomb = new ProductCombination($this->db);
 
+		$features = array_filter($features);
+
 		foreach ($features as $attr => $attr_val) {
 			$actual_comp[$attr] = $attr_val;
 		}