1 files changed, 1 insertions, 1 deletions

diff --git a/src/mobilesync.c b/src/mobilesync.c
index 4fe24b2..af70ea4 100644
--- a/src/mobilesync.c
+++ b/src/mobilesync.c
@@ -81,7 +81,7 @@ static mobilesync_error_t mobilesync_error(device_link_service_error_t err)
 mobilesync_error_t mobilesync_client_new(idevice_t device, lockdownd_service_descriptor_t service,
                                                    mobilesync_client_t * client)
 {
-        if (!device || service->port == 0 || !client || *client)
+        if (!device || !service || service->port == 0 || !client || *client)
                 return MOBILESYNC_E_INVALID_ARG;
 
         device_link_service_client_t dlclient = NULL;