diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 3dfef062396845d2b45cc42a22064ec4402ee05f..cf0d2ffb3c84a149bc904323cd53599620c8c917 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -440,7 +440,7 @@ test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {
 
 static int nfs4_access_to_omode(u32 access)
 {
-	switch (access) {
+	switch (access & NFS4_SHARE_ACCESS_BOTH) {
 	case NFS4_SHARE_ACCESS_READ:
 		return O_RDONLY;
 	case NFS4_SHARE_ACCESS_WRITE: