diff --git a/dist/lodash.compat.js b/dist/lodash.compat.js
index 3365dce67..38947f248 100644
--- a/dist/lodash.compat.js
+++ b/dist/lodash.compat.js
@@ -294,12 +294,12 @@
       for (prop in arguments) { }
 
       /**
-       * Detect if `arguments` objects are `Object` objects (all but Opera < 10.5).
+       * Detect if `arguments` objects are `Object` objects (all but Narwhal and Opera < 10.5).
        *
        * @memberOf _.support
        * @type Boolean
        */
-      support.argsObject = arguments.constructor == Object;
+      support.argsObject = arguments.constructor == Object && !(arguments instanceof Array);
 
       /**
        * Detect if an `arguments` object's [[Class]] is resolvable (all but Firefox < 4, IE < 9).
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index abc1f1652..2663b15d5 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
@@ -21,7 +21,7 @@ for(var u=n.length;++e<u&&!(r=t(n[e],e,n)););}else be(n,function(n,e,u){return!(
 return i}function _t(n,t,e){var r=-1,u=n?n.length:0;if(typeof e=="number")r=(0>e?ae(0,u+e):e||0)-1;else if(e)return r=Ct(n,t),n[r]===t?r:-1;for(;++r<u;)if(n[r]===t)return r;return-1}function wt(n,t,e){if(typeof t!="number"&&null!=t){var r=0,u=-1,o=n?n.length:0;for(t=a.createCallback(t,e);++u<o&&t(n[u],u,n);)r++}else r=null==t||e?1:ae(0,t);return H(n,r)}function Ct(n,t,e,r){var u=0,o=n?n.length:u;for(e=e?a.createCallback(e,r,1):Et,t=e(t);u<o;)r=u+o>>>1,e(n[r])<t?u=r+1:o=r;return u}function jt(n,t,e,r){var u=-1,o=n?n.length:0,i=[],c=i;
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+se[k]=It,se[x]=Pt,se[O]=Nt,se[A]=Ft,se[S]=Bt,se[I]=Rt,se[P]=Tt;var ve=a.support={};(function(){var n=function(){this.x=1},t={0:1,length:1},e=[];n.prototype={valueOf:1,y:1};for(var r in new n)e.push(r);for(r in arguments);ve.argsObject=arguments.constructor==Ft&&!(arguments instanceof It),ve.argsClass=Q(arguments),ve.enumPrototypes=n.propertyIsEnumerable("prototype"),ve.fastBind=ne&&!pe,ve.ownLast="x"!=e[0],ve.nonEnumArgs=0!=r,ve.nonEnumShadows=!/valueOf/.test(e),ve.spliceObjects=(zt.splice.call(t,0,1),!t[0]),ve.unindexedChars="xx"!="x"[0]+Ft("x")[0];
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diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index 734f4e361..0dbf74319 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -222,12 +222,12 @@
     var object = { '0': 1, 'length': 1 };
 
     /**
-     * Detect if `arguments` objects are `Object` objects (all but Opera < 10.5).
+     * Detect if `arguments` objects are `Object` objects (all but Narwhal and Opera < 10.5).
      *
      * @memberOf _.support
      * @type Boolean
      */
-    support.argsObject = arguments.constructor == Object;
+    support.argsObject = arguments.constructor == Object && !(arguments instanceof Array);
 
     /**
      * Detect if `Function#bind` exists and is inferred to be fast (all but V8).
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index c34747cb5..e30ba8222 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -4,31 +4,31 @@
  * Build: `lodash underscore exports="amd,commonjs,global,node" -o ./dist/lodash.underscore.js`
  * Underscore.js 1.4.4 underscorejs.org/LICENSE
  */
-;(function(n){function t(n,t){var r;if(n&&vt[typeof n])for(r in n)if(At.call(n,r)&&t(n[r],r,n)===nt)break}function r(n,t){var r;if(n&&vt[typeof n])for(r in n)if(t(n[r],r,n)===nt)break}function e(n){var t,r=[];if(!n||!vt[typeof n])return r;for(t in n)At.call(n,t)&&r.push(t);return r}function u(n){return n instanceof u?n:new c(n)}function o(n,t){var r=n.b,e=t.b;if(n=n.a,t=t.a,n!==t){if(n>t||typeof n=="undefined")return 1;if(n<t||typeof t=="undefined")return-1}return r<e?-1:1}function i(n,t,r){function e(){var f=arguments,c=o?this:t;
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diff --git a/lodash.js b/lodash.js
index 8c099cf8c..f73272964 100644
--- a/lodash.js
+++ b/lodash.js
@@ -293,12 +293,12 @@
       for (prop in arguments) { }
 
       /**
-       * Detect if `arguments` objects are `Object` objects (all but Opera < 10.5).
+       * Detect if `arguments` objects are `Object` objects (all but Narwhal and Opera < 10.5).
        *
        * @memberOf _.support
        * @type Boolean
        */
-      support.argsObject = arguments.constructor == Object;
+      support.argsObject = arguments.constructor == Object && !(arguments instanceof Array);
 
       /**
        * Detect if an `arguments` object's [[Class]] is resolvable (all but Firefox < 4, IE < 9).