diff --git a/Formula/cassandra@2.1.rb b/Formula/cassandra@2.1.rb
index df2ac944de..02a8078a69 100644
--- a/Formula/cassandra@2.1.rb
+++ b/Formula/cassandra@2.1.rb
@@ -86,6 +86,8 @@ class CassandraAT21 < Formula
     (bin/"cqlsh").write_env_script libexec/"bin/cqlsh", :PYTHONPATH => pypath
   end
 
+  plist_options :manual => "#{HOMEBREW_PREFIX}/opt/cassandra@2.1/bin/cassandra -f"
+
   def plist; <<-EOS.undent
     <?xml version="1.0" encoding="UTF-8"?>
     <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">