diff --git a/lodash.src.js b/lodash.src.js
index 2b93561c5..98b3180d7 100644
--- a/lodash.src.js
+++ b/lodash.src.js
@@ -3213,7 +3213,8 @@
       var Ctor = createCtorWrapper(func);
 
       function wrapper() {
-        return (this instanceof wrapper ? Ctor : func).apply(thisArg, arguments);
+        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
+        return fn.apply(thisArg, arguments);
       }
       return wrapper;
     }
@@ -3416,7 +3417,8 @@
         if (isAry && ary < args.length) {
           args.length = ary;
         }
-        return (this instanceof wrapper ? (Ctor || createCtorWrapper(func)) : func).apply(thisBinding, args);
+        var fn = (this && this !== root && this instanceof wrapper) ? (Ctor || createCtorWrapper(func)) : func;
+        return fn.apply(thisBinding, args);
       }
       return wrapper;
     }
@@ -3475,7 +3477,8 @@
         while (argsLength--) {
           args[leftIndex++] = arguments[++argsIndex];
         }
-        return (this instanceof wrapper ? Ctor : func).apply(isBind ? thisArg : this, args);
+        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
+        return fn.apply(isBind ? thisArg : this, args);
       }
       return wrapper;
     }