diff --git a/bin/bento b/bin/bento
index 15deb569a..982fc8d09 100755
--- a/bin/bento
+++ b/bin/bento
@@ -223,9 +223,7 @@ class BuildRunner
 
   def packer_build_cmd(template, var_file)
     vars = "#{template}.variables.json"
-    if (/darwin/ =~ RUBY_PLATFORM)
-      headless = false
-    end
+    headless = !(RUBY_PLATFORM =~ /darwin/)
     cmd = %W[packer build -var-file=#{var_file} #{template}.json]
     cmd.insert(2, "-var-file=#{vars}") if File.exist?(vars)
     cmd.insert(2, "-only=#{builds}") if builds