1 files changed, 2 insertions, 2 deletions
diff --git a/lib/fs.js b/lib/fs.js
index 67c96a7524..ac0d42c76a 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -981,7 +981,7 @@ fs.readdirSync = function(path, options) {
 };
 
 fs.fstat = function(fd, callback) {
-  if (typeof fd !== 'number')
+  if (!Number.isInteger(fd))
     throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'fd', 'number');
   if (fd < 0 || fd > 0xFFFFFFFF)
     throw new errors.RangeError('ERR_OUT_OF_RANGE', 'fd');
@@ -1011,7 +1011,7 @@ fs.stat = function(path, callback) {
 };
 
 fs.fstatSync = function(fd) {
-  if (typeof fd !== 'number')
+  if (!Number.isInteger(fd))
     throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'fd', 'number');
   if (fd < 0 || fd > 0xFFFFFFFF)
     throw new errors.RangeError('ERR_OUT_OF_RANGE', 'fd');