diff --git a/includes/widgets/class-wc-widget-price-filter.php b/includes/widgets/class-wc-widget-price-filter.php
index 442ae4e5b67..c5c14110d16 100644
--- a/includes/widgets/class-wc-widget-price-filter.php
+++ b/includes/widgets/class-wc-widget-price-filter.php
@@ -158,7 +158,7 @@ class WC_Widget_Price_Filter extends WC_Widget {
 		if ( '' == get_option( 'permalink_structure' ) ) {
 			$form_action = remove_query_arg( array( 'page', 'paged' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) );
 		} else {
-			$form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( $wp->request ) );
+			$form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( trailingslashit( $wp->request ) ) );
 		}
 
 		echo '<form method="get" action="' . esc_url( $form_action ) . '">