diff --git a/lib/fs.js b/lib/fs.js
index eb204c000f..0e915aaabc 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -175,8 +175,6 @@ fs.readFile = function(path, options, callback_) {
     options = { encoding: null, flag: 'r' };
   } else if (util.isString(options)) {
     options = { encoding: options, flag: 'r' };
-  } else if (!options) {
-    options = { encoding: null, flag: 'r' };
   } else if (!util.isObject(options)) {
     throw new TypeError('Bad arguments');
   }
@@ -919,8 +917,6 @@ fs.writeFile = function(path, data, options, callback) {
     options = { encoding: 'utf8', mode: 438 /*=0666*/, flag: 'w' };
   } else if (util.isString(options)) {
     options = { encoding: options, mode: 438, flag: 'w' };
-  } else if (!options) {
-    options = { encoding: 'utf8', mode: 438 /*=0666*/, flag: 'w' };
   } else if (!util.isObject(options)) {
     throw new TypeError('Bad arguments');
   }
@@ -976,8 +972,6 @@ fs.appendFile = function(path, data, options, callback_) {
     options = { encoding: 'utf8', mode: 438 /*=0666*/, flag: 'a' };
   } else if (util.isString(options)) {
     options = { encoding: options, mode: 438, flag: 'a' };
-  } else if (!options) {
-    options = { encoding: 'utf8', mode: 438 /*=0666*/, flag: 'a' };
   } else if (!util.isObject(options)) {
     throw new TypeError('Bad arguments');
   }