diff --git a/man/coredump.conf.xml b/man/coredump.conf.xml
index 6392270543d..7cb71f80aa7 100644
--- a/man/coredump.conf.xml
+++ b/man/coredump.conf.xml
@@ -85,7 +85,8 @@
 
         <listitem><para>The maximum size in bytes of a core which will be processed. Core dumps exceeding
         this size may be stored, but the backtrace will not be generated.  Like other sizes in this same
-        config file, the usual suffixes to the base of 1024 are allowed (B, K, M, G, T, P, and E).</para>
+        config file, the usual suffixes to the base of 1024 are allowed (B, K, M, G, T, P, and E). Defaults
+        to 1G on 32bit systems, 32G on 64bit systems.</para>
 
         <para>Setting <varname>Storage=none</varname> and <varname>ProcessSizeMax=0</varname>
         disables all coredump handling except for a log entry.</para>
@@ -96,8 +97,9 @@
         <term><varname>ExternalSizeMax=</varname></term>
         <term><varname>JournalSizeMax=</varname></term>
 
-        <listitem><para>The maximum (compressed or uncompressed) size in bytes of a core to be saved. Unit
-        suffixes are allowed just as in <option>ProcessSizeMax=</option>.</para></listitem>
+        <listitem><para>The maximum (compressed or uncompressed) size in bytes of a core to be saved in
+        separate files on disk (default: 1G on 32bit, 32G on 64bit systems) or in the journal (default:
+        10M). Unit suffixes are allowed just as in <option>ProcessSizeMax=</option>.</para></listitem>
 
         <para><varname>ExternalSizeMax=infinity</varname> sets the core size to unlimited.</para>
       </varlistentry>