diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 7048e6d7e9b..31839a59ce1 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -6501,6 +6501,7 @@ static void direct_link_region(FileData *fd, ARegion *ar, int spacetype)
 				rv3d->sms = NULL;
 				rv3d->smooth_timer = NULL;
 				rv3d->compositor = NULL;
+				rv3d->viewport = NULL;
 			}
 		}
 	}