diff --git a/includes/class-wc-product-variable.php b/includes/class-wc-product-variable.php
index 124863785c0..bf5e4699abf 100644
--- a/includes/class-wc-product-variable.php
+++ b/includes/class-wc-product-variable.php
@@ -249,9 +249,11 @@ class WC_Product_Variable extends WC_Product {
 			$price_hash = array( false );
 		}
 
-		foreach ( $wp_filter as $key => $val ) {
-			if ( in_array( $key, array( 'woocommerce_variation_prices_price', 'woocommerce_variation_prices_regular_price', 'woocommerce_variation_prices_sale_price' ) ) ) {
-				$price_hash[ $key ] = $val;
+		$filter_names = array( 'woocommerce_variation_prices_price', 'woocommerce_variation_prices_regular_price', 'woocommerce_variation_prices_sale_price' );
+
+		foreach ( $filter_names as $filter_name ) {
+			if ( ! empty( $wp_filter[ $filter_name ] ) ) {
+				$price_hash[ $filter_name ] = $wp_filter[ $filter_name ];
 			}
 		}