diff --git a/docs/man/man1/ansible-playbook.1.asciidoc.in b/docs/man/man1/ansible-playbook.1.asciidoc.in
index ecb32e81beb..11f52d001d7 100644
--- a/docs/man/man1/ansible-playbook.1.asciidoc.in
+++ b/docs/man/man1/ansible-playbook.1.asciidoc.in
@@ -47,7 +47,9 @@ The 'PATH' to the inventory hosts file, which defaults to
 
 *-M* 'DIRECTORY', *--module-path=*'DIRECTORY'::
 
-The 'DIRECTORY' to load modules from. The default is '/usr/share/ansible'.
+The 'DIRECTORY' search path to load modules from. The default is
+'/usr/share/ansible'. This can also be set with the ANSIBLE_LIBRARY
+environment variable.
 
 *-e* 'VARS', *--extra-vars=*'VARS'::
 
diff --git a/docs/man/man1/ansible.1.asciidoc.in b/docs/man/man1/ansible.1.asciidoc.in
index c8833d76506..0f88311d933 100644
--- a/docs/man/man1/ansible.1.asciidoc.in
+++ b/docs/man/man1/ansible.1.asciidoc.in
@@ -60,8 +60,9 @@ Execute the module called 'NAME'.
 
 *-M* 'DIRECTORY', *--module-path=*'DIRECTORY'::
 
-The 'DIRECTORY' to load modules from. The default is '/usr/share/ansible'.
-
+The 'DIRECTORY' search path to load modules from. The default is
+'/usr/share/ansible'. This can also be set with the ANSIBLE_LIBRARY
+environment variable.
 
 *-a* \'_ARGUMENTS_', *--args=*\'_ARGUMENTS_'::