diff --git a/includes/class-wc-ajax.php b/includes/class-wc-ajax.php
index 702f7c4e163..779a7df8430 100644
--- a/includes/class-wc-ajax.php
+++ b/includes/class-wc-ajax.php
@@ -214,7 +214,7 @@ class WC_AJAX {
 		$coupon = wc_clean( $_POST['coupon'] );
 
 		if ( ! isset( $coupon ) || empty( $coupon ) ) {
-			wc_add_notice( __( 'Sorry there was a problem removing this coupon.', 'woocommerce' ) );
+			wc_add_notice( __( 'Sorry there was a problem removing this coupon.', 'woocommerce' ), 'error' );
 
 		} else {