diff --git a/src/SentryIntegration.php b/src/SentryIntegration.php
index 441308e..1fd5f89 100644
--- a/src/SentryIntegration.php
+++ b/src/SentryIntegration.php
@@ -40,8 +40,15 @@ class SentryIntegration {
         ),
       )
     );
+
+    self :: $dsn = App::get('sentry.dsn');
+    if (!self :: $dsn) {
+      Log :: trace("SentryIntegration::init(): no DSN configured");
+      return;
+    }
+
     \Sentry\init([
-        'dsn' => App::get('sentry.dsn'),
+        'dsn' => self :: $dsn,
         'traces_sample_rate' => App::get('sentry.traces_sample_rate', null, 'float'),
     ]);