diff --git a/fs/afs/super.c b/fs/afs/super.c
index eb04dcc543289887b79509a6473a46d182632588..554119068ea44582a6b8a49b870ec2dc84f26987 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -391,6 +391,8 @@ static int afs_validate_fc(struct fs_context *fc)
 			return PTR_ERR(volume);
 
 		ctx->volume = volume;
+		if (volume->type != AFSVL_RWVOL)
+			ctx->flock_mode = afs_flock_mode_local;
 	}
 
 	return 0;