diff --git a/src/Orders/Order/Address.php b/src/Orders/Order/Address.php
index f0adb391..9487aeb8 100644
--- a/src/Orders/Order/Address.php
+++ b/src/Orders/Order/Address.php
@@ -42,11 +42,11 @@ public function get_formatted_address() {
 	}
 
 	private function get_first_name() {
-		return ! empty( $this->sf_address['firstName'] ) ? $this->sf_address['firstName'] : '';
+		return ! empty( $this->sf_address['firstName'] ) ? $this->sf_address['firstName'] : '_';
 	}
 
 	private function get_last_name() {
-		return ! empty( $this->sf_address['lastName'] ) ? $this->sf_address['lastName'] : '';
+		return ! empty( $this->sf_address['lastName'] ) ? $this->sf_address['lastName'] : '_';
 	}
 
 	private function get_company() {