diff --git a/drivers/staging/greybus/core.c b/drivers/staging/greybus/core.c
index 1d05c35a1b60..7428206a32a0 100644
--- a/drivers/staging/greybus/core.c
+++ b/drivers/staging/greybus/core.c
@@ -302,6 +302,7 @@ error_bus:
 
 static void __exit gb_exit(void)
 {
+	gb_protocol_exit();
 	gb_operation_exit();
 	gb_gbuf_exit();
 	gb_ap_exit();