diff --git a/app/lib/request.rb b/app/lib/request.rb
index 85716f999..4bde6fc91 100644
--- a/app/lib/request.rb
+++ b/app/lib/request.rb
@@ -273,7 +273,9 @@ class Request
 
       def check_private_address(address, host)
         addr = IPAddr.new(address.to_s)
-        return if private_address_exceptions.any? { |range| range.include?(addr) }
+
+        return if Rails.env.development? || private_address_exceptions.any? { |range| range.include?(addr) }
+
         raise Mastodon::PrivateNetworkAddressError, host if PrivateAddressCheck.private_address?(addr)
       end
 
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 32c5cce8b..a633dfce5 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -77,9 +77,3 @@ Rails.application.configure do
 end
 
 Redis.raise_deprecations = true
-
-module PrivateAddressCheck
-  def self.private_address?(*)
-    false
-  end
-end