diff --git a/ChangeLog b/ChangeLog
index bf05a4d..f9888c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,10 @@
 
 bzr branch lp:libisofs/for-libisoburn (to become libisofs-1.4.6.tar.gz)
 ===============================================================================
+* Bug fix: SIGSEGV by NULL when a data file was larger than ISO level allows.
 * New API calls iso_generate_gpt_guid() and +iso_write_opts_set_gpt_guid().
 
+
 libisofs-1.4.4.tar.gz Fri Jul 01 2016
 ===============================================================================
 * Bug fix: HFS+ production could cause MBR partition of type 0xEE without GPT.
diff --git a/libisofs/ecma119_tree.c b/libisofs/ecma119_tree.c
index 5b6965d..39f12b8 100644
--- a/libisofs/ecma119_tree.c
+++ b/libisofs/ecma119_tree.c
@@ -241,11 +241,11 @@ int create_file_src(Ecma119Image *img, IsoFile *iso, IsoFileSrc **src)
     size = iso_stream_get_size(iso->stream);
     if (size > (off_t)MAX_ISO_FILE_SECTION_SIZE && img->opts->iso_level != 3) {
         char *ipath = iso_tree_get_node_path(ISO_NODE(iso));
-        ret = iso_msg_submit(img->image->id, ISO_FILE_TOO_BIG, 0,
-                              "File \"%s\" can't be added to image because "
-                              "is greater than 4GB", ipath);
+        iso_msg_submit(img->image->id, ISO_FILE_TOO_BIG, 0,
+                              "File \"%s\" cannot be added to image because "
+                              "its size is 4 GiB or larger", ipath);
         free(ipath);
-        return ret;
+        return ISO_FILE_TOO_BIG;
     }
     ret = iso_file_src_create(img, iso, src);
     if (ret < 0) {