diff --git a/reference/openssl/constants.xml b/reference/openssl/constants.xml
index f00704f3435e..09e139c63004 100644
--- a/reference/openssl/constants.xml
+++ b/reference/openssl/constants.xml
@@ -566,6 +566,17 @@
   <section xml:id="openssl.ciphers">
    <title>Ciphers</title>
    <variablelist>
+  <varlistentry xml:id="constant.openssl-default-stream-ciphers">
+   <term>
+    <constant>OPENSSL_DEFAULT_STREAM_CIPHERS</constant>
+    (<type>string</type>)
+   </term>
+   <listitem>
+    <simpara>
+     List of default ciphers.
+    </simpara>
+   </listitem>
+  </varlistentry>
   <varlistentry xml:id="constant.openssl-cipher-rc2-40">
    <term>
     <constant>OPENSSL_CIPHER_RC2_40</constant>
@@ -727,6 +738,18 @@
         </simpara>
       </listitem>
     </varlistentry>
+    <varlistentry xml:id="constant.openssl-dont-zero-pad-key">
+      <term>
+       <constant>OPENSSL_DONT_ZERO_PAD_KEY</constant>
+       (<type>int</type>)
+      </term>
+      <listitem>
+        <simpara>
+         Prevents <function>openssl_encrypt</function> from padding keys that
+         are shorter than the default key length.
+        </simpara>
+      </listitem>
+    </varlistentry>
     <varlistentry xml:id="constant.openssl-zero-padding">
       <term>
        <constant>OPENSSL_ZERO_PADDING</constant>