diff --git a/fs/ksmbd/smb_common.c b/fs/ksmbd/smb_common.c
index f034b75c6d7f..af583e426621 100644
--- a/fs/ksmbd/smb_common.c
+++ b/fs/ksmbd/smb_common.c
@@ -423,7 +423,7 @@ int ksmbd_extract_shortname(struct ksmbd_conn *conn, const char *longname,
 	out[baselen + 3] = PERIOD;
 
 	if (dot_present)
-		memcpy(&out[baselen + 4], extension, 4);
+		memcpy(out + baselen + 4, extension, 4);
 	else
 		out[baselen + 4] = '\0';
 	smbConvertToUTF16((__le16 *)shortname, out, PATH_MAX,