diff --git a/utils.py b/utils.py
index 7029704..f703c56 100755
--- a/utils.py
+++ b/utils.py
@@ -720,5 +720,5 @@ def resize(self, img, scale):
         return img
     
     def rotate(self, id):
-        img = Image.open(self.flist[id]).convert('RGB').rotate(90)
+        img = Image.open(self.flist[id]).convert('RGB').rotate(-90)
         img.save(self.flist[id])