diff --git a/MPM/mpm_gateway.php b/MPM/mpm_gateway.php
index 93c0560a6..f0aa69b94 100644
--- a/MPM/mpm_gateway.php
+++ b/MPM/mpm_gateway.php
@@ -163,12 +163,13 @@ public function process_payment($order_id)
 		{
 			if (defined('WP_DEBUG') && WP_DEBUG)
 			{
-				$woocommerce->add_error(__('Could not create payment.', 'MPM') . ' Reason: invalid order ID');
+				$mpm->add_notice(__('Could not create payment.', 'MPM') . ' Reason: invalid order ID', 'error');
 			}
 			else
 			{
-				$woocommerce->add_error(__('Could not create payment.', 'MPM'));
+				$mpm->add_notice(__('Could not create payment.', 'MPM'), 'error');
 			}
+
 			return array('result' => 'failure');
 		}
 
@@ -266,11 +267,11 @@ public function process_payment($order_id)
 		{
 			if (defined('WP_DEBUG') && WP_DEBUG)
 			{
-				$woocommerce->add_error(__('Could not create payment.', 'MPM') . ' Reason: ' . $e->getMessage());
+				$mpm->add_notice(__('Could not create payment.', 'MPM') . ' Reason: ' . $e->getMessage(), 'error');
 			}
 			else
 			{
-				$woocommerce->add_error(__('Could not create payment.', 'MPM'));
+				$mpm->add_notice(__('Could not create payment.', 'MPM'), 'error');
 			}
 
 			return array('result' => 'failure');
diff --git a/MPM/mpm_settings.php b/MPM/mpm_settings.php
index d928d3833..9a6809523 100644
--- a/MPM/mpm_settings.php
+++ b/MPM/mpm_settings.php
@@ -545,4 +545,35 @@ public function get_issuers ($method = NULL)
 			return array();
 		}
 	}
+
+	/**
+	 * Add a woocommerce notification message
+	 *
+	 * @param string $message Notification message
+	 * @param string $type Notification type, default = notice
+	 */
+	public function add_notice ($message, $type = 'notice')
+	{
+		global $woocommerce;
+		$type = in_array($type, array('notice','error','success')) ? $type : 'notice';
+		
+		// Check for existence of new notification api. Else use previous add_error
+		if (function_exists('wc_add_notice'))
+		{
+			wc_add_notice($message, $type);
+		}
+		else
+		{
+			// Retrocompatibility WooCommerce < 2.1
+			switch ($type)
+			{
+				case "error" :
+					$woocommerce->add_error($message);
+					break;
+				default :
+					$woocommerce->add_message($message);
+					break;
+			}
+		}
+	}
 }