diff --git a/libisofs/ecma119_tree.c b/libisofs/ecma119_tree.c
index ca61b21..fe395e5 100644
--- a/libisofs/ecma119_tree.c
+++ b/libisofs/ecma119_tree.c
@@ -94,7 +94,7 @@ needs_transl:;
         } else if (img->max_37_char_filenames) {
             isoname = iso_r_fileid(ascii_name, 36, relaxed, force_dots);
         } else if (img->iso_level == 1) {
-            if (relaxed || !force_dots) {
+            if (relaxed) {
                 if (strchr(ascii_name, '.') == NULL)
                     max_len = 8;
                 else
@@ -102,7 +102,7 @@ needs_transl:;
                 isoname = iso_r_fileid(ascii_name, max_len, relaxed,
                                        force_dots);
             } else {
-                isoname = iso_1_fileid(ascii_name);
+                isoname = iso_1_fileid(ascii_name, force_dots);
             }
         } else {
             if (relaxed || !force_dots) {
diff --git a/libisofs/util.h b/libisofs/util.h
index 8bcaef1..67a5741 100644
--- a/libisofs/util.h
+++ b/libisofs/util.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2007 Vreixo Formoso
- * Copyright (c) 2009 Thomas Schmitt
+ * Copyright (c) 2009 - 2012 Thomas Schmitt
  * 
  * This file is part of the libisofs project; you can redistribute it and/or 
  * modify it under the terms of the GNU General Public License version 2 
@@ -124,8 +124,10 @@ char *iso_r_dirid(const char *src, int size, int relaxed);
  * 
  * @param src
  *      The identifier, in ASCII encoding.
+ * @param force_dots
+ *      If 1 then prepend empty extension by SEPARATOR1 = '.'
  */
-char *iso_1_fileid(const char *src);
+char *iso_1_fileid(const char *src, int force_dots);
 
 /**
  * Create a level 2 file identifier.