diff --git a/lib/copy-sync/__tests__/copy-sync-dir.test.js b/lib/copy-sync/__tests__/copy-sync-dir.test.js
index 7a5ecf51..78cfd87c 100644
--- a/lib/copy-sync/__tests__/copy-sync-dir.test.js
+++ b/lib/copy-sync/__tests__/copy-sync-dir.test.js
@@ -182,7 +182,7 @@ describe('+ copySync() / dir', () => {
     it('should apply filter when it is applied only to dest', done => {
       const timeCond = new Date().getTime()
 
-      const filter = (s, d) => fs.statSync(d).birthtime.getTime() < timeCond
+      const filter = (s, d) => fs.statSync(d).mtime.getTime() < timeCond
 
       const dest = path.join(TEST_DIR, 'dest')
 
@@ -197,7 +197,7 @@ describe('+ copySync() / dir', () => {
 
     it('should apply filter when it is applied to both src and dest', done => {
       const timeCond = new Date().getTime()
-      const filter = (s, d) => s.split('.').pop() !== 'css' && fs.statSync(path.dirname(d)).birthtime.getTime() > timeCond
+      const filter = (s, d) => s.split('.').pop() !== 'css' && fs.statSync(path.dirname(d)).mtime.getTime() > timeCond
 
       const dest = path.join(TEST_DIR, 'dest')
 
diff --git a/lib/copy/__tests__/copy.test.js b/lib/copy/__tests__/copy.test.js
index ba230f37..5cc07e32 100644
--- a/lib/copy/__tests__/copy.test.js
+++ b/lib/copy/__tests__/copy.test.js
@@ -366,7 +366,7 @@ describe('fs-extra', () => {
       it('should apply filter when it is applied only to dest', done => {
         const timeCond = new Date().getTime()
 
-        const filter = (s, d) => fs.statSync(d).birthtime.getTime() < timeCond
+        const filter = (s, d) => fs.statSync(d).mtime.getTime() < timeCond
 
         const src = path.join(TEST_DIR, 'src')
         fse.mkdirsSync(src)
@@ -388,7 +388,7 @@ describe('fs-extra', () => {
 
       it('should apply filter when it is applied to both src and dest', done => {
         const timeCond = new Date().getTime()
-        const filter = (s, d) => s.split('.').pop() !== 'css' && fs.statSync(path.dirname(d)).birthtime.getTime() > timeCond
+        const filter = (s, d) => s.split('.').pop() !== 'css' && fs.statSync(path.dirname(d)).mtime.getTime() > timeCond
 
         const dest = path.join(TEST_DIR, 'dest')
         setTimeout(() => {