diff --git a/lib/resin/helpers/helpers.coffee b/lib/resin/helpers/helpers.coffee
index 20af5632..5d18e214 100644
--- a/lib/resin/helpers/helpers.coffee
+++ b/lib/resin/helpers/helpers.coffee
@@ -1,9 +1,36 @@
 _ = require('lodash')
 path = require('path')
 
+# Check is path is absolute
+#
+# @private
+#
+# @param {String} path path
+# @return {Boolean} is absolute
+#
+# @example Is path absolute?
+#		console.log isAbsolutePath('/usr') # True
+#		console.log isAbsolutePath('../Music') # False
+#
 exports.isAbsolutePath = (p) ->
 	return path.resolve(p) is p
 
+# Prefix relative value paths with another path
+#
+# @private
+#
+# @param {String} prefix path prefix
+# @param {Object} object object containing relative paths as values
+#
+# @note Absolute values will be omitted
+#
+# @example Prefix object with path
+#		object =
+#			dataPrefix: 'resin'
+#
+#		object = prefixObjectValuesWithPath('/opt', object)
+#		console.log(object.dataPrefix) # /opt/resin
+#
 exports.prefixObjectValuesWithPath = (prefix, object) ->
 	return _.object _.map object, (value, key) ->
 		result = [ key ]