diff --git a/pub.py b/pub.py
index cf29327..4401152 100755
--- a/pub.py
+++ b/pub.py
@@ -40,7 +40,7 @@ def upload_file(filename, overwrite=True):
     s3.upload_file(filename, BUCKET, filename, ExtraArgs={
         'ACL': 'public-read',
         'ContentType': TYPE_MAP[ext],
-        'CacheControl': 'public, max-age={}'.format('31536000' if ext in ['gif', 'jpg', 'png', 'webp'] else 86400)
+        'CacheControl': 'public, max-age={}'.format(31536000 if ext in ['gif', 'jpg', 'png', 'webp'] else 86400)
     })
 
     if (ext == 'html'):
@@ -48,7 +48,7 @@ def upload_file(filename, overwrite=True):
         s3.upload_file(filename, BUCKET, filename[:-5], ExtraArgs={
             'ACL': 'public-read',
             'ContentType': TYPE_MAP[ext],
-            'CacheControl': 'public, max-age={}'.format('31536000' if ext in ['gif', 'jpg', 'png', 'webp'] else 86400)
+            'CacheControl': 'public, max-age={}'.format(31536000 if ext in ['gif', 'jpg', 'png', 'webp'] else 86400)
         })
 
     print('\tDone.')