diff --git a/AUTHORS.rst b/AUTHORS.rst
index 011735b55..265a9fd41 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -173,3 +173,4 @@ features or generally made searx better:
 - Austin Olacsi `<https://github.com/Austin-Olacsi>`
 - @micsthepick
 - Daniel Kukula `<https://github.com/dkuku>`
+- Patrick Evans `https://github.com/holysoles`
\ No newline at end of file
diff --git a/docs/admin/settings/settings_server.rst b/docs/admin/settings/settings_server.rst
index daba6d1dd..cf480683e 100644
--- a/docs/admin/settings/settings_server.rst
+++ b/docs/admin/settings/settings_server.rst
@@ -31,13 +31,13 @@
 ``secret_key`` : ``$SEARXNG_SECRET``
   Used for cryptography purpose.
 
-``limiter`` :
+``limiter`` :  ``$SEARXNG_LIMITER``
   Rate limit the number of request on the instance, block some bots.  The
   :ref:`limiter` requires a :ref:`settings redis` database.
 
 .. _public_instance:
 
-``public_instance`` :
+``public_instance`` :  ``$SEARXNG_PUBLIC_INSTANCE``
 
   Setting that allows to enable features specifically for public instances (not
   needed for local usage).  By set to ``true`` the following features are
@@ -47,7 +47,7 @@
 
 .. _image_proxy:
 
-``image_proxy`` :
+``image_proxy`` : ``$SEARXNG_IMAGE_PROXY``
   Allow your instance of SearXNG of being able to proxy images.  Uses memory space.
 
 .. _HTTP headers: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers
diff --git a/docs/admin/settings/settings_ui.rst b/docs/admin/settings/settings_ui.rst
index a5d1076ec..1a6df9a17 100644
--- a/docs/admin/settings/settings_ui.rst
+++ b/docs/admin/settings/settings_ui.rst
@@ -24,7 +24,7 @@
 
 .. _static_use_hash:
 
-``static_use_hash`` :
+``static_use_hash`` : ``$SEARXNG_STATIC_USE_HASH``
   Enables `cache busting`_ of static files.
 
 ``default_locale`` :
diff --git a/searx/settings.yml b/searx/settings.yml
index db749be77..d1e51031a 100644
--- a/searx/settings.yml
+++ b/searx/settings.yml
@@ -78,14 +78,18 @@ server:
   # public URL of the instance, to ensure correct inbound links. Is overwritten
   # by ${SEARXNG_URL}.
   base_url: false  # "http://example.com/location"
-  limiter: false  # rate limit the number of request on the instance, block some bots
-  public_instance: false  # enable features designed only for public instances
+  # rate limit the number of request on the instance, block some bots.
+  # Is overwritten by ${SEARXNG_LIMITER}
+  limiter: false
+  # enable features designed only for public instances.
+  # Is overwritten by ${SEARXNG_PUBLIC_INSTANCE}
+  public_instance: false
 
   # If your instance owns a /etc/searxng/settings.yml file, then set the following
   # values there.
 
   secret_key: "ultrasecretkey"  # Is overwritten by ${SEARXNG_SECRET}
-  # Proxying image results through searx
+  # Proxy image results through SearXNG. Is overwritten by ${SEARXNG_IMAGE_PROXY}
   image_proxy: false
   # 1.0 and 1.1 are supported
   http_protocol_version: "1.0"
@@ -106,6 +110,7 @@ redis:
 ui:
   # Custom static path - leave it blank if you didn't change
   static_path: ""
+  # Is overwritten by ${SEARXNG_STATIC_USE_HASH}.
   static_use_hash: false
   # Custom templates path - leave it blank if you didn't change
   templates_path: ""
diff --git a/searx/settings_defaults.py b/searx/settings_defaults.py
index 93b04257c..6786a78c4 100644
--- a/searx/settings_defaults.py
+++ b/searx/settings_defaults.py
@@ -174,11 +174,11 @@ SCHEMA = {
     'server': {
         'port': SettingsValue((int, str), 8888, 'SEARXNG_PORT'),
         'bind_address': SettingsValue(str, '127.0.0.1', 'SEARXNG_BIND_ADDRESS'),
-        'limiter': SettingsValue(bool, False),
-        'public_instance': SettingsValue(bool, False),
+        'limiter': SettingsValue(bool, False, 'SEARXNG_LIMITER'),
+        'public_instance': SettingsValue(bool, False, 'SEARXNG_PUBLIC_INSTANCE'),
         'secret_key': SettingsValue(str, environ_name='SEARXNG_SECRET'),
         'base_url': SettingsValue((False, str), False, 'SEARXNG_BASE_URL'),
-        'image_proxy': SettingsValue(bool, False),
+        'image_proxy': SettingsValue(bool, False, 'SEARXNG_IMAGE_PROXY'),
         'http_protocol_version': SettingsValue(('1.0', '1.1'), '1.0'),
         'method': SettingsValue(('POST', 'GET'), 'POST'),
         'default_http_headers': SettingsValue(dict, {}),
@@ -188,7 +188,7 @@ SCHEMA = {
     },
     'ui': {
         'static_path': SettingsDirectoryValue(str, os.path.join(searx_dir, 'static')),
-        'static_use_hash': SettingsValue(bool, False),
+        'static_use_hash': SettingsValue(bool, False, 'SEARXNG_STATIC_USE_HASH'),
         'templates_path': SettingsDirectoryValue(str, os.path.join(searx_dir, 'templates')),
         'default_theme': SettingsValue(str, 'simple'),
         'default_locale': SettingsValue(str, ''),