diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index a05d337..d1fac68 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -78,8 +78,10 @@
 
 	if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
 		accmode |= MAY_READ;
-	if (open->op_share_deny & NFS4_SHARE_ACCESS_WRITE)
+	if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
 		accmode |= (MAY_WRITE | MAY_TRUNC);
+	if (open->op_share_deny & NFS4_SHARE_DENY_WRITE)
+		accmode |= MAY_WRITE;
 
 	status = fh_verify(rqstp, current_fh, S_IFREG, accmode);