diff --git a/lib/fp/mapping.js b/lib/fp/mapping.js
index 4f8f52c71..66e98616c 100644
--- a/lib/fp/mapping.js
+++ b/lib/fp/mapping.js
@@ -79,18 +79,17 @@ module.exports = {
       'memoize,method,methodOf,mixin,rest,reverse,round,runInContext,template,trim,' +
       'trimLeft,trimRight,uniqueId,words').split(','),
     2: (
-      'ary,assign,at,bind,bindKey,cloneDeepWith,cloneWith,countBy,curryN,debounce,' +
-      'defaults,defaultsDeep,delay,difference,drop,dropRight,dropRightWhile,' +
-      'dropWhile,endsWith,every,extend,filter,find,find,findIndex,findKey,' +
-      'findLast,findLastIndex,findLastKey,forEach,forEachRight,forIn,forInRight,' +
-      'forOwn,forOwnRight,get,groupBy,includes,indexBy,indexOf,intersection,' +
-      'invoke,isMatch,lastIndexOf,map,mapKeys,mapValues,matchesProperty,maxBy,' +
-      'minBy,merge,modArgs,modArgsSet,omit,pad,padLeft,padRight,parseInt,partition,' +
-      'pick,pull,pullAll,pullAt,random,range,rearg,reject,remove,repeat,result,' +
-      'sampleSize,set,some,sortBy,sortByOrder,sortedIndexBy,sortedLastIndexBy,' +
-      'sortedUniqBy,startsWith,sumBy,take,takeRight,takeRightWhile,takeWhile,' +
-      'throttle,times,truncate,union,uniqBy,without,wrap,xor,zip,' +
-      'zipObject').split(','),
+      'add,ary,assign,at,bind,bindKey,cloneDeepWith,cloneWith,countBy,curryN,' +
+      'debounce,defaults,defaultsDeep,delay,difference,drop,dropRight,dropRightWhile,' +
+      'dropWhile,endsWith,every,extend,filter,find,find,findIndex,findKey,findLast,' +
+      'findLastIndex,findLastKey,forEach,forEachRight,forIn,forInRight,forOwn,' +
+      'forOwnRight,get,groupBy,includes,indexBy,indexOf,intersection,invoke,isMatch,' +
+      'lastIndexOf,map,mapKeys,mapValues,matchesProperty,maxBy,minBy,merge,modArgs,' +
+      'modArgsSet,omit,pad,padLeft,padRight,parseInt,partition,pick,pull,pullAll,' +
+      'pullAt,random,range,rearg,reject,remove,repeat,result,sampleSize,set,some,' +
+      'sortBy,sortByOrder,sortedIndexBy,sortedLastIndexBy,sortedUniqBy,startsWith,' +
+      'subtract,sumBy,take,takeRight,takeRightWhile,takeWhile,throttle,times,' +
+      'truncate,union,uniqBy,without,wrap,xor,zip,zipObject').split(','),
     3: (
       'assignWith,clamp,differenceBy,extendWith,getOr,inRange,intersectionBy,' +
       'isEqualWith,isMatchWith,mergeWith,omitBy,pickBy,pullAllBy,reduce,' +