diff --git a/Rakefile b/Rakefile
index 125cbfc..c35cebb 100644
--- a/Rakefile
+++ b/Rakefile
@@ -13,9 +13,7 @@ PuppetLint.configuration.ignore_paths = ["spec/**/*.pp", "pkg/**/*.pp"]
 
 desc "Validate manifests, templates, and ruby files in lib."
 task :validate do
-  Dir['manifests/**/*.pp'].each do |manifest|
-    sh "puppet parser validate --noop #{manifest}"
-  end
+  sh "puppet parser validate --noop #{Dir['manifests/**/*.pp'].join(" ")}"
   Dir['lib/**/*.rb'].each do |lib_file|
     sh "ruby -c #{lib_file}"
   end