diff --git a/source/administration/backups.txt b/source/administration/backups.txt
index c758d3a27be..f073a40ac29 100644
--- a/source/administration/backups.txt
+++ b/source/administration/backups.txt
@@ -369,6 +369,8 @@ the snapshot has completed, use the following command in the
       db.runCommand( { fsync: 1, lock: true } );
       db.runCommand( { fsync: 1, lock: false } );
 
+   .. include:: /includes/note-disable-profiling-fsynclock.rst
+
 .. _backup-amazon-software-raid:
 
 Amazon EBS in Software RAID 10 Configuration
diff --git a/source/includes/note-disable-profiling-fsynclock.rst b/source/includes/note-disable-profiling-fsynclock.rst
new file mode 100644
index 00000000000..1b19ca31bb5
--- /dev/null
+++ b/source/includes/note-disable-profiling-fsynclock.rst
@@ -0,0 +1,9 @@
+.. note::
+
+   The database cannot be locked with :func:`db.fsyncLock()` while profiling is enabled.
+   You must disable profiling before locking the database with :func:`db.fsyncLock()`.
+   Disable profiling using :func:`db.setProfilingLevel()` as follows in the :program:`mongo` shell:
+
+.. code-block:: javascript
+
+   db.setProfilingLevel(0)
diff --git a/source/reference/commands.txt b/source/reference/commands.txt
index 86645dcebcb..c0784ba5f14 100644
--- a/source/reference/commands.txt
+++ b/source/reference/commands.txt
@@ -1375,6 +1375,8 @@ Administration
       The :func:`db.fsyncLock()` and :func:`db.fsyncUnlock()`
       helpers in the shell.
 
+   .. include:: /includes/note-disable-profiling-fsynclock.rst
+
 .. dbcommand:: dropDatabase
 
    The :dbcommand:`dropDatabase` command drops a database, deleting
@@ -2170,6 +2172,8 @@ Diagnostics
                 around this functionality in the :program:`mongo`
                 shell.
 
+   .. include:: /includes/note-disable-profiling-fsynclock.rst
+
 .. dbcommand:: listCommands
 
    The :dbcommand:`listCommands` command generates a list of all
diff --git a/source/reference/javascript.txt b/source/reference/javascript.txt
index 209d13cdcc7..f9eea90cb0a 100644
--- a/source/reference/javascript.txt
+++ b/source/reference/javascript.txt
@@ -1099,6 +1099,8 @@ Database
    the :setting:`slowms` to the log even when the database profiler is
    not active.
 
+   .. include:: /includes/note-disable-profiling-fsynclock.rst
+
 .. function:: db.shutdownServer()
 
    Shuts down the current :program:`mongod` or :program:`mongos`
@@ -1154,6 +1156,8 @@ Database
    This function locks the database and create a window for
    :doc:`backup operations </administration/backups>`.
 
+   .. include:: /includes/note-disable-profiling-fsynclock.rst
+
 .. function:: db.fsyncUnlock()
 
    Unlocks a database server to allow writes and reverses the