diff --git a/lib/apache/rake/create.rb b/lib/apache/rake/create.rb
index 0b4ddd1..00715ba 100644
--- a/lib/apache/rake/create.rb
+++ b/lib/apache/rake/create.rb
@@ -6,9 +6,24 @@ require 'rainbow'
 
 CONFIG = Hash[YAML.load_file('config.yml').collect { |k,v| [ k.to_sym, v ] }]
 
+def get_environments
+  CONFIG[:source_path] = File.expand_path(CONFIG[:source])
+
+  Dir[File.join(CONFIG[:source_path], '**', '*.rb')].collect { |file|
+    File.readlines(file).find_all { |line| line[%r{(if_environment|build_if)}] }.collect { |line| line.scan(%r{:[a-z_]+}) }
+  }.flatten.uniq.sort.collect { |name| name[1..-1] }
+end
+
 namespace :apache do
   desc "Create all defined configs for the specified environment"
   task :create, :environment do |t, args|
+    if !args[:environment]
+      puts "You need to specify an environment. Available environments:"
+      puts
+      puts get_environments.collect { |env| "rake apache:create[#{env}]" } * "\n"
+      exit 1
+    end
+
     APACHE_ENV = (args[:environment] || 'production').to_sym
 
     CONFIG[:source_path] = File.expand_path(CONFIG[:source])
@@ -27,10 +42,6 @@ namespace :apache do
 
   desc "List all possible environments"
   task :environments do
-    CONFIG[:source_path] = File.expand_path(CONFIG[:source])
-
-    puts Dir[File.join(CONFIG[:source_path], '**', '*.rb')].collect { |file|
-      File.readlines(file).find_all { |line| line[%r{(if_environment|build_if)}] }.collect { |line| line.scan(%r{:[a-z_]+}) }
-    }.flatten.uniq.sort.collect { |name| name[1..-1] } * "\n"
+    puts get_environments * "\n"
   end
 end