diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index f4508d07f16..17d71117ed8 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -731,6 +731,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
 
 		/* Can't open a temp directory. IFS kit test. */
 		if (file_attributes & FILE_ATTRIBUTE_TEMPORARY) {
+			restore_case_semantics(conn, file_attributes);
 			END_PROFILE(SMBntcreateX);
 			return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 		}