diff --git a/booking.stripe.inc b/booking.stripe.inc
index 631ed20..e2f4591 100644
--- a/booking.stripe.inc
+++ b/booking.stripe.inc
@@ -225,22 +225,22 @@ function booking_stripe_validate_form_payment($form, &$form_state) {
     $e_json = $e->getJsonBody();
     $error = $e_json['error'];
     watchdog('booking', "<pre>Detected exception processing Stripe payment (!message)\n@info</pre>", 
-      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTrace() )));
+      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTraceAsString() )));
     drupal_set_message($e->getMessage(), 'error');
   } 
   catch (\Stripe\Error\ApiConnection $e) {
     watchdog('booking', "<pre>Detected exception processing Stripe payment (!message)\n@info</pre>", 
-      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTrace() )));
+      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTraceAsString() )));
     drupal_set_message($e->getMessage(), 'error');
   } 
   catch (\Stripe\Error\Api $e) {
     watchdog('booking', "<pre>Detected exception processing Stripe payment (!message)\n@info</pre>", 
-      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTrace() )));
+      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTraceAsString() )));
     drupal_set_message($e->getMessage(), 'error');
   }
   catch (\Stripe\Exception\CardException $e) {
     watchdog('booking', "<pre>Detected exception processing Stripe payment (!message)\n@info</pre>", 
-      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTrace() )));
+      array('!message' => $e->getMessage(), '@info' => var_dump( $e->getTraceAsString() )));
     drupal_set_message($e->getMessage(), 'error');    
   }
 }