diff --git a/plugins/woocommerce/includes/wc-product-functions.php b/plugins/woocommerce/includes/wc-product-functions.php
index d3c715a09c9..bced2009235 100644
--- a/plugins/woocommerce/includes/wc-product-functions.php
+++ b/plugins/woocommerce/includes/wc-product-functions.php
@@ -686,7 +686,7 @@ function wc_get_product_id_by_sku( $sku ) {
  */
 function wc_get_product_variation_attributes( $variation_id ) {
 	// Build variation data from meta.
-	$all_meta                = array_filter( (array) get_post_meta( $variation_id ) );
+	$all_meta                = is_array( get_post_meta( $variation_id ) ) ? get_post_meta( $variation_id ) : array();
 	$parent_id               = wp_get_post_parent_id( $variation_id );
 	$parent_attributes       = array_filter( (array) get_post_meta( $parent_id, '_product_attributes', true ) );
 	$found_parent_attributes = array();