Index: Gemfile
===================================================================
--- Gemfile	(revision 21201)
+++ Gemfile	(working copy)
@@ -68,6 +68,9 @@
       when /sqlserver/
         gem "tiny_tds", "~> 2.1.2", :platforms => [:mri, :mingw, :x64_mingw]
         gem "activerecord-sqlserver-adapter", "~> 5.2.1", :platforms => [:mri, :mingw, :x64_mingw]
+      when /postgis/
+        gem 'pg', '~> 1.2.3'
+        gem 'activerecord-postgis-adapter'
       else
         warn("Unknown database adapter `#{adapter}` found in config/database.yml, use Gemfile.local to load your own database gems")
       end
Index: lib/redmine/database.rb
===================================================================
--- lib/redmine/database.rb	(revision 21201)
+++ lib/redmine/database.rb	(working copy)
@@ -28,7 +28,7 @@
 
       # Returns true if the database is PostgreSQL
       def postgresql?
-        /postgresql/i.match?(ActiveRecord::Base.connection.adapter_name)
+        /postgresql/i.match?(ActiveRecord::Base.connection.adapter_name) or /postgis/i.match?(ActiveRecord::Base.connection.adapter_name)
       end
 
       # Returns the PostgreSQL version or nil if another DBMS is used