diff --git a/texinfo-4.13a-bug788574.diff b/texinfo-4.13a-bug788574.diff
new file mode 100644
index 0000000..4fa0e2c
--- /dev/null
+++ b/texinfo-4.13a-bug788574.diff
@@ -0,0 +1,20 @@
+--- makeinfo/sectioning.c	2008/09/26 11:56:28	1.30
++++ makeinfo/sectioning.c	2011/01/15 00:23:19	1.32
+@@ -256,14 +256,14 @@
+     return xstrdup ("");
+   else if (enum_marker == APPENDIX_MAGIC)
+     {
+-      char s[1];
++      char s[2];
+       sprintf (s, "%c", numbers[0] + 64);
+       return xstrdup (s);
+     }
+   else
+     {
+-      char s[5];
+-      sprintf (s, "%d", numbers[0]);
++      char s[100];
++      sprintf (s, "%4d", numbers[0]);
+       return xstrdup (s);
+     }
+ }
diff --git a/texinfo.changes b/texinfo.changes
index e14ebc7..e5a6245 100644
--- a/texinfo.changes
+++ b/texinfo.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Tue Nov 20 10:02:54 UTC 2012 - werner@suse.de
+
+- Use latest CVS version for the last patch
+
+-------------------------------------------------------------------
+Mon Nov 19 14:24:06 UTC 2012 - werner@suse.de
+
+- Be aware that characters of appendix numbering requires a ASCII
+  null if used as string (bnc#788574)
+
 -------------------------------------------------------------------
 Sat Oct  6 06:18:21 UTC 2012 - coolo@suse.com
 
diff --git a/texinfo.spec b/texinfo.spec
index 13ce79c..d76b38d 100644
--- a/texinfo.spec
+++ b/texinfo.spec
@@ -61,6 +61,7 @@ Patch6:         texi2roff-2.0-gcc4.patch
 Patch7:         texinfo-4.13a-bug640417.diff
 Patch8:         texinfo-4.13a-bug713517.diff
 Patch9:         automake-1.12.patch
+Patch10:        texinfo-4.13a-bug788574.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -106,6 +107,7 @@ rm -rf texi2html-%{version_t2h} texi2roff-%{version_t2r}
 %patch7 -p1 -b .size_t
 %patch8 -p0 -b .egrep
 %patch9 -p1
+%patch10 -p0 -b .appendix
 %patch -p0
 pushd ../texi2html-%{version_t2h}
 %patch1 -p0