diff --git a/src/SentryTarget.php b/src/SentryTarget.php
index 52c00e0..eba3f12 100644
--- a/src/SentryTarget.php
+++ b/src/SentryTarget.php
@@ -138,7 +138,11 @@ public function export()
 
                     $data['extra'] = $text;
                 } else {
-                    $data['message'] = (string) $text;
+                    if($text instanceof Throwable) {
+                        $data['exception'] = $text;
+                    } else {
+                        $data['message'] = (string)$text;
+                    }
                 }
 
                 if ($this->context) {