diff --git a/lib/fp/build-doc.js b/lib/fp/build-doc.js
index bba62d2e6..350b9a7e4 100644
--- a/lib/fp/build-doc.js
+++ b/lib/fp/build-doc.js
@@ -18,9 +18,11 @@ var templateData = {
 };
 
 function toArgOrder(array) {
-  return '`(' + _.map(array, function(value) {
-    return argNames[value];
-  }).join(', ') + ')`';
+  var reordered = [];
+  _.each(array, function(newIndex, index) {
+    reordered[newIndex] = argNames[index];
+  });
+  return '`(' + reordered.join(', ') + ')`';
 }
 
 function toFuncList(array) {