diff --git a/docs/docsite/rst/intro_configuration.rst b/docs/docsite/rst/intro_configuration.rst
index 38d1503631..4e03ebe987 100644
--- a/docs/docsite/rst/intro_configuration.rst
+++ b/docs/docsite/rst/intro_configuration.rst
@@ -502,6 +502,19 @@ to talk to::
 
 It used to be called hostfile in Ansible before 1.9
 
+.. _inventory_ignore_extensions:
+
+inventory_ignore_extensions
+===========================
+
+Coma-separated list of file extension patterns to ignore when Ansible inventory
+is a directory with multiple sources (static and dynamic)::
+
+    inventory_ignore_extensions = ~, .orig, .bak, .ini, .cfg, .retry, .pyc, .pyo
+
+This option can be overridden by setting ``ANSIBLE_INVENTORY_IGNORE``
+environment variable.
+
 .. _jinja2_extensions:
 
 jinja2_extensions
diff --git a/docs/docsite/rst/intro_dynamic_inventory.rst b/docs/docsite/rst/intro_dynamic_inventory.rst
index 72337a5e54..597a809094 100644
--- a/docs/docsite/rst/intro_dynamic_inventory.rst
+++ b/docs/docsite/rst/intro_dynamic_inventory.rst
@@ -346,7 +346,7 @@ hybrid cloud!
 
 In an inventory directory, executable files will be treated as dynamic inventory sources and most other files as static sources. Files which end with any of the following will be ignored::
 
-    ~, .orig, .bak, .ini, .retry, .pyc, .pyo
+    ~, .orig, .bak, .ini, .cfg, .retry, .pyc, .pyo
 
 You can replace this list with your own selection by configuring an ``inventory_ignore_extensions`` list in ansible.cfg, or setting the ANSIBLE_INVENTORY_IGNORE environment variable. The value in either case should be a comma-separated list of patterns, as shown above.
 
diff --git a/examples/ansible.cfg b/examples/ansible.cfg
index fd5ed9badc..e469c9cc18 100644
--- a/examples/ansible.cfg
+++ b/examples/ansible.cfg
@@ -280,6 +280,10 @@
 # Controls showing custom stats at the end, off by default
 #show_custom_stats = True
 
+# Controlls which files to ignore when using a directory as inventory with
+# possibly multiple sources (both static and dynamic)
+#inventory_ignore_extensions = ~, .orig, .bak, .ini, .cfg, .retry, .pyc, .pyo
+
 [privilege_escalation]
 #become=True
 #become_method=sudo