diff --git a/classes/gateways/class.pmprogateway_paypalstandard.php b/classes/gateways/class.pmprogateway_paypalstandard.php
index ad154f7e5..dbf1d70d3 100644
--- a/classes/gateways/class.pmprogateway_paypalstandard.php
+++ b/classes/gateways/class.pmprogateway_paypalstandard.php
@@ -197,6 +197,11 @@ static function pmpro_checkout_before_change_membership_level($user_id, $morder)
 			if(empty($morder))
 				return;
 
+			// If this isn't a PayPal Standard order, bail.
+			if ( 'paypalstandard' !== $morder->gateway ) {
+				return;
+			}
+
 			$morder->user_id = $user_id;
 			$morder->saveOrder();
 
diff --git a/classes/gateways/class.pmprogateway_twocheckout.php b/classes/gateways/class.pmprogateway_twocheckout.php
index 11009e28f..17db41d6a 100644
--- a/classes/gateways/class.pmprogateway_twocheckout.php
+++ b/classes/gateways/class.pmprogateway_twocheckout.php
@@ -227,6 +227,12 @@ static function pmpro_checkout_before_change_membership_level($user_id, $morder)
 			if(empty($morder))
 				return;
 
+			// If this isn't a 2Checkout order, bail.
+			if ( 'twocheckout' !== $morder->gateway ) {
+				return;
+			}
+
+
 			$morder->user_id = $user_id;
 			$morder->saveOrder();