diff --git a/modules/ppcp-wc-gateway/src/Processor/OrderProcessor.php b/modules/ppcp-wc-gateway/src/Processor/OrderProcessor.php
index bbb2f11be..ce8d48583 100644
--- a/modules/ppcp-wc-gateway/src/Processor/OrderProcessor.php
+++ b/modules/ppcp-wc-gateway/src/Processor/OrderProcessor.php
@@ -167,7 +167,12 @@ class OrderProcessor {
 		if ( ! $order ) {
 			$order_id = $wc_order->get_meta( PayPalGateway::ORDER_ID_META_KEY );
 			if ( ! $order_id ) {
-				$this->logger->warning( "No PayPal order ID found in order #{$wc_order->get_id()} meta." );
+				$this->logger->warning(
+					sprintf(
+						'No PayPal order ID found in order #%d meta.',
+						$wc_order->get_id()
+					)
+				);
 				$this->last_error = __( 'Could not retrieve order. This browser may not be supported. Please try again with a different browser.', 'woocommerce-paypal-payments' );
 				return false;
 			}