diff --git a/CHANGES b/CHANGES
index eef4ebcfd8..8cfb61e34b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+5420.	[bug]		Add missing isc_{mutex,conditional}_destroy calls
+			that caused a memory leak on FreeBSD. [GL #1893]
+
 5419.	[func]		"dig +qid=<num>" sets the query ID to an arbitrary
 			value. "configure --enable-singletrace" allows
 			trace logging of a single query when QID is set to 0.
diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index 46d61fd32d..8289252f15 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -121,3 +121,6 @@ Bug Fixes
 -  When built without LMDB support, ``named`` failed to restart after a
    zone with a double quote (") in its name was added with ``rndc
    addzone``. Thanks to Alberto Fernández. [GL #1695]
+
+-  Missing mutex and conditional destruction in netmgr code leads to a
+   memory leak on *BSD systems. [GL #1893]