doc/index.rst | 7 ++++---
 pyderasn.py   | 4 ++--

diff --git a/doc/index.rst b/doc/index.rst
index efb48dad47842a3d3c6ec33baff40b3bba0d9ae0a2f94d8765669da1da584c44..76226d0d7ec9694b68322564726a374865720b9fc240d1fc8040a9e449a52885 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -11,9 +11,10 @@ `ASN.1 <https://en.wikipedia.org/wiki/ASN.1>`__ (Abstract Syntax
 Notation One) is a standard for abstract data serialization. PyDERASN is
 yet another library for dealing with ASN.1 structures, decoding them in
 `BER/CER/DER <https://en.wikipedia.org/wiki/X.690>`__ formats and
-encoding to DER (Distinguished Encoding Rules). Although ASN.1 is
-written more than 30 years ago by wise Ancients (taken from ``pyasn1``'s
-README), it is still often can be seen anywhere in our life.
+encoding to either DER (Distinguished Encoding Rules) or CER (Canonical
+Encoding Rules). Although ASN.1 is written more than 30 years ago by wise
+Ancients (taken from ``pyasn1``'s README), it is still often can be seen
+anywhere in our life.
 
 PyDERASN is `free software <https://www.gnu.org/philosophy/free-sw.html>`__,
 licenced under `GNU LGPLv3 <https://www.gnu.org/licenses/lgpl-3.0.html>`__.
diff --git a/pyderasn.py b/pyderasn.py
index 0b76fa67d0deda9b1b4b5d18da38ca6fe99dcc581b93c2f551220c8cc726d6cb..73472ee3a0f424c78f9581f544b5d3988875204565025e152200cc652249294e 100755
--- a/pyderasn.py
+++ b/pyderasn.py
@@ -17,9 +17,9 @@ # GNU Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""Python ASN.1 DER/BER codec with abstract structures
+"""Python ASN.1 DER/CER/BER codec with abstract structures
 
-This library allows you to marshal various structures in ASN.1 DER
+This library allows you to marshal various structures in ASN.1 DER/CER
 format, unmarshal BER/CER/DER ones.
 
     >>> i = Integer(123)