diff --git a/README b/README
index 4423c0edd..137232562 100644
--- a/README
+++ b/README
@@ -9,8 +9,7 @@ To compile ejabberd you need:
  - GNU Make
  - GCC
  - Libexpat 1.95 or higher
- - Erlang/OTP R10B-9 or higher. The recommended version is R12B-5.
-   Support for R13 is experimental.
+ - Erlang/OTP R10B-9 or higher. Recommended versions: R12B-5 and R13B04
  - OpenSSL 0.9.6 or higher, for STARTTLS, SASL and SSL
    encryption. Optional, highly recommended.
  - Zlib 1.2.3 or higher, for Stream Compression support
diff --git a/doc/guide.html b/doc/guide.html
index 635afe51e..96cca70d4 100644
--- a/doc/guide.html
+++ b/doc/guide.html
@@ -345,7 +345,7 @@ as long as your system have all the dependencies.</P><P> <A NAME="installreq"></
 GNU Make
 </LI><LI CLASS="li-itemize">GCC
 </LI><LI CLASS="li-itemize">Libexpat 1.95 or higher
-</LI><LI CLASS="li-itemize">Erlang/OTP R10B-9 or higher. The recommended version is R12B-5. Support for R13 is experimental.
+</LI><LI CLASS="li-itemize">Erlang/OTP R10B-9 or higher. The recommended versions are R12B-5 and R13B04.
 </LI><LI CLASS="li-itemize">OpenSSL 0.9.6 or higher, for STARTTLS, SASL and SSL encryption. Optional, highly recommended.
 </LI><LI CLASS="li-itemize">Zlib 1.2.3 or higher, for Stream Compression support (<A HREF="http://xmpp.org/extensions/xep-0138.html">XEP-0138</A>). Optional.
 </LI><LI CLASS="li-itemize">Erlang mysql library. Optional. For MySQL authentication or storage. See section <A HREF="#compilemysql">3.2.1</A>.
diff --git a/doc/guide.tex b/doc/guide.tex
index 9463d57aa..a0cf1b22c 100644
--- a/doc/guide.tex
+++ b/doc/guide.tex
@@ -310,7 +310,7 @@ To compile \ejabberd{} on a `Unix-like' operating system, you need:
 \item GNU Make
 \item GCC
 \item Libexpat 1.95 or higher
-\item Erlang/OTP R10B-9 or higher. The recommended version is R12B-5. Support for R13 is experimental.
+\item Erlang/OTP R10B-9 or higher. The recommended versions are R12B-5 and R13B04.
 \item OpenSSL 0.9.6 or higher, for STARTTLS, SASL and SSL encryption. Optional, highly recommended.
 \item Zlib 1.2.3 or higher, for Stream Compression support (\xepref{0138}). Optional.
 \item Erlang mysql library. Optional. For MySQL authentication or storage. See section \ref{compilemysql}.