diff --git a/chef/cookbooks/discourse/files/default/redis.yml b/chef/cookbooks/discourse/files/default/redis.yml
index 213d48f28cb..22565a19fc6 100644
--- a/chef/cookbooks/discourse/files/default/redis.yml
+++ b/chef/cookbooks/discourse/files/default/redis.yml
@@ -2,7 +2,6 @@ defaults: &defaults
   host: localhost
   port: 6379
   db: 0
-  cache_db: 2
 
 development:
   <<: *defaults
diff --git a/config/cloud/cloud66/files/redis.yml b/config/cloud/cloud66/files/redis.yml
index 50771512a09..25ba0da879f 100644
--- a/config/cloud/cloud66/files/redis.yml
+++ b/config/cloud/cloud66/files/redis.yml
@@ -4,7 +4,6 @@ defaults: &defaults
   port: <%= uri.port %>
   password: <%= uri.password %>
   db: 0
-  cache_db: 2
 
 development:
   <<: *defaults
diff --git a/config/discourse_defaults.conf b/config/discourse_defaults.conf
index 319c0a969d7..24adef48170 100644
--- a/config/discourse_defaults.conf
+++ b/config/discourse_defaults.conf
@@ -76,8 +76,5 @@ redis_port = 6379
 # redis database
 redis_db = 0
 
-# redis database for caching
-redis_cache_db = 2
-
 # redis password
 redis_password =
diff --git a/config/redis.yml b/config/redis.yml
index d16d29eb7f7..5e8b2b5c346 100644
--- a/config/redis.yml
+++ b/config/redis.yml
@@ -3,7 +3,6 @@ defaults: &defaults
   port: <%= GlobalSetting.redis_port %>
   password: <%= GlobalSetting.redis_password %>
   db: <%= GlobalSetting.redis_db %>
-  cache_db: <%= GlobalSetting.redis_cache_db %>
 
 development:
   <<: *defaults