diff --git a/src/PassportServiceProvider.php b/src/PassportServiceProvider.php
index 4e482a6a..a1155c19 100644
--- a/src/PassportServiceProvider.php
+++ b/src/PassportServiceProvider.php
@@ -167,9 +167,11 @@ function (AuthorizationServer $server): void {
                     );
                 }
 
-                $server->enableGrantType(
-                    $this->makeDeviceCodeGrant(), Passport::tokensExpireIn()
-                );
+                if (Route::has('passport.device')) {
+                    $server->enableGrantType(
+                        $this->makeDeviceCodeGrant(), Passport::tokensExpireIn()
+                    );
+                }
             })
         );
     }