diff --git a/Formula/lavinmq.rb b/Formula/lavinmq.rb
index 7cc74fd..33f9900 100644
--- a/Formula/lavinmq.rb
+++ b/Formula/lavinmq.rb
@@ -26,10 +26,21 @@ def install
     man1.install "man1/lavinmq.1"
     man1.install "man1/lavinmqctl.1"
     man1.install "man1/lavinmqperf.1"
+
+    unless lavinmq_config.exist?
+      pkgetc.install "extras/lavinmq.ini"
+      inreplace lavinmq_config do |s|
+        s.gsub!(/^data_dir.*/, "data_dir = #{var}/lavinmq")
+      end
+    end
+  end
+
+  def lavinmq_config
+    pkgetc/"lavinmq.ini"
   end
 
   service do
-    run [opt_bin / "lavinmq", "-D", var / "lavinmq"]
+    run [opt_bin/"lavinmq", "-c", etc/"lavinmq/lavinmq.ini"]
   end
 
   test do