diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ca5740..051f372 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 0.1.12
+
+* added **yesno2bool** function
+
 ## 0.1.11
 
 * added **git clone** type to clone repos
diff --git a/lib/puppet/parser/functions/yesno2bool.rb b/lib/puppet/parser/functions/yesno2bool.rb
new file mode 100644
index 0000000..cfd9f9d
--- /dev/null
+++ b/lib/puppet/parser/functions/yesno2bool.rb
@@ -0,0 +1,26 @@
+#shamesly stolen from: https://github.com/puppetlabs/puppetlabs-apache/blob/master/lib/puppet/parser/functions/bool2httpd.rb
+# with minor changes
+#
+#
+#Copyright (C) 2012 Puppet Labs Inc
+#
+#Puppet Labs can be contacted at: info@puppetlabs.com
+#
+#Licensed under the Apache License, Version 2.0 (the "License");
+#
+#
+Puppet::Parser::Functions::newfunction(:yesno2bool, :type => :rvalue, :doc => <<-EOS
+Transform a supposed string ('yes', 'true' or 'no', 'false') to a bool (true or false).
+Unexpected values will return true and nil value (undef) will return false
+EOS
+) do |args|
+  raise(Puppet::ParseError, "bool2yesno() wrong number of arguments. #{args.size} vs 1)") if args.size != 1
+
+  arg = args[0]
+
+  if arg.nil? or arg == false or arg =~ /false/i or arg =~ /no/i or arg == :undef
+    return false
+  else
+    return true
+  end
+end
diff --git a/metadata.json b/metadata.json
index adb23f0..9d71edd 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,6 +1,6 @@
 {
   "name": "eyp-eyplib",
-  "version": "0.1.11",
+  "version": "0.1.12",
   "author": "eyp",
   "summary": "Utility functions for puppet modules",
   "license": "Apache-2.0",