diff --git a/components/dfs/src/dfs_file.c b/components/dfs/src/dfs_file.c
index c437b43829a2a9adf67b03011e592918cb3505b6..76cf419c0a7412db081b1bf074aafe181cb874b7 100644
--- a/components/dfs/src/dfs_file.c
+++ b/components/dfs/src/dfs_file.c
@@ -189,7 +189,7 @@ int dfs_file_ioctl(struct dfs_fd *fd, int cmd, void *args)
                 int mask  = O_NONBLOCK | O_APPEND;
 
                 flags &= mask;
-                fd->flags &= mask;
+                fd->flags &= ~mask;
                 fd->flags |= flags;
             }
             return 0;
diff --git a/components/dfs/src/dfs_posix.c b/components/dfs/src/dfs_posix.c
index 3d863c4f98316c3631f313ea8f09c5ccdd75477c..898488a2aad7c0ca5b4ea87f1e21de61a737b07e 100644
--- a/components/dfs/src/dfs_posix.c
+++ b/components/dfs/src/dfs_posix.c
@@ -455,7 +455,7 @@ int fcntl(int fildes, int cmd, ...)
         ret = -1;
     }
 
-    return 0;
+    return ret;
 }
 RTM_EXPORT(fcntl);