diff --git a/reference/openssl/functions/openssl-pkcs7-sign.xml b/reference/openssl/functions/openssl-pkcs7-sign.xml
index 8e4bce5a72..6d71a58b4f 100644
--- a/reference/openssl/functions/openssl-pkcs7-sign.xml
+++ b/reference/openssl/functions/openssl-pkcs7-sign.xml
@@ -66,7 +66,7 @@
        <parameter>headers</parameter> is an array of headers that
        will be prepended to the data after it has been signed (see
        <function>openssl_pkcs7_encrypt</function> for more information about
-       the format of this parameter.
+       the format of this parameter).
       </para>
      </listitem>
     </varlistentry>