diff --git a/sylvilagus/jruby/Rakefile b/sylvilagus/jruby/Rakefile
index f6a044a..b87e112 100644
--- a/sylvilagus/jruby/Rakefile
+++ b/sylvilagus/jruby/Rakefile
@@ -5,11 +5,11 @@ RMQV = '2.8.7'
 
 directory './tmp'
 
-file "./tmp/rabbitmq-java-client-bin-#{RMQV}.tar.gz" => ['./tmp'] do |f|
+file "./tmp/rabbitmq-java-client-bin-#{RMQV}.tar.gz" => ['./tmp'] do |t|
   puts "*** Downloading tarball"
-  open("#{RMQ_URI_BASE}/v#{RMQV}/rabbitmq-java-client-bin-#{RMQV}.tar.gz") do |f|
-    open('./tmp/rabbitmq-java-client-bin.tar.gz', 'w') do |out|
-      out.write(f.read)
+  open("#{RMQ_URI_BASE}/v#{RMQV}/rabbitmq-java-client-bin-#{RMQV}.tar.gz") do |dl|
+    open(t.name, 'w') do |out|
+      out.write(dl.read)
     end
   end
 end
@@ -18,8 +18,7 @@ file "./tmp/rabbitmq-java-client-bin-#{RMQV}/rabbitmq-client.jar" =>
     ["./tmp/rabbitmq-java-client-bin-#{RMQV}.tar.gz"] do
   puts "*** Extracting tarball"
   Dir.chdir('./tmp') do
-    `tar xzvf rabbitmq-java-client-bin.tar.gz`
-    puts "*** Extracted, exit code = #{$?}"
+    sh "tar xzvf rabbitmq-java-client-bin-#{RMQV}.tar.gz"
   end
 end