diff --git a/CHANGES b/CHANGES
index 64cced24c8..ba22d0708d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+4984.	[bug]		Improve handling of very large incremental
+			zone transfers to prevent journal corruption. [GL #339]
+
 4979.	[bug]		Non-libcap builds were not checking whether all
 			requested capabilities are present in the permitted
 			capability set. [GL #321]
diff --git a/doc/arm/notes.xml b/doc/arm/notes.xml
index b301b5b287..7f2a98b69a 100644
--- a/doc/arm/notes.xml
+++ b/doc/arm/notes.xml
@@ -90,6 +90,14 @@
 
   <section xml:id="relnotes_bugs"><info><title>Bug Fixes</title></info>
     <itemizedlist>
+      <listitem>
+	<para>
+	  <command>named</command> now rejects excessively large
+	  incremental (IXFR) zone transfers in order to prevent
+	  possible corruption of journal files which could cause
+	  <command>named</command> to abort when loading zones. [GL #339]
+	</para>
+      </listitem>
       <listitem>
 	<para>
 	  <command>rndc reload</command> could cause <command>named</command>