diff --git a/utils/utils.py b/utils/utils.py
index c33f41f..305486a 100755
--- a/utils/utils.py
+++ b/utils/utils.py
@@ -47,7 +47,7 @@ def check_git_status():
 
 def check_img_size(img_size, s=32):
     # Verify img_size is a multiple of stride s
-    new_size = make_divisible(img_size, s)  # ceil gs-multiple
+    new_size = make_divisible(img_size, int(s))  # ceil gs-multiple
     if new_size != img_size:
         print('WARNING: --img-size %g must be multiple of max stride %g, updating to %g' % (img_size, s, new_size))
     return new_size