diff --git a/doc/README.intl b/doc/README.intl
index f32dca1813..cbbf952e42 100644
--- a/doc/README.intl
+++ b/doc/README.intl
@@ -1,3 +1,5 @@
+# -*- coding: ISO-8859-1 -*-
+
 Firebird INTL
 =============