diff --git a/drivers/staging/vboxvideo/vbox_drv.c b/drivers/staging/vboxvideo/vbox_drv.c
index 92ae1560a16d..5d9c65119914 100644
--- a/drivers/staging/vboxvideo/vbox_drv.c
+++ b/drivers/staging/vboxvideo/vbox_drv.c
@@ -36,7 +36,7 @@
 
 #include "vbox_drv.h"
 
-int vbox_modeset = -1;
+static int vbox_modeset = -1;
 
 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 module_param_named(modeset, vbox_modeset, int, 0400);
diff --git a/drivers/staging/vboxvideo/vbox_ttm.c b/drivers/staging/vboxvideo/vbox_ttm.c
index 34a905d40735..4eb410a2a1a8 100644
--- a/drivers/staging/vboxvideo/vbox_ttm.c
+++ b/drivers/staging/vboxvideo/vbox_ttm.c
@@ -230,7 +230,7 @@ static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
 	ttm_pool_unpopulate(ttm);
 }
 
-struct ttm_bo_driver vbox_bo_driver = {
+static struct ttm_bo_driver vbox_bo_driver = {
 	.ttm_tt_create = vbox_ttm_tt_create,
 	.ttm_tt_populate = vbox_ttm_tt_populate,
 	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,