diff --git a/maildir-zero b/maildir-zero
index 4ef5d84..37199dc 100755
--- a/maildir-zero
+++ b/maildir-zero
@@ -22,9 +22,9 @@ def maildir_count(maildir):
 
     cur = dir_count(os.path.join(maildir, 'cur'))
     new = dir_count(os.path.join(maildir, 'new'))
-    all_ = cur + new
+    count = cur + new
 
-    return (new, all_)
+    return (new, count)
 
 
 def mailbox_name(maildir, root):
@@ -50,15 +50,15 @@ root = os.path.expanduser('~/Maildir')
 counts = {}
 for maildir in maildirs(root):
     name = mailbox_name(maildir, root)
-    _, all_ = maildir_count(maildir)
+    _, count = maildir_count(maildir)
 
-    if all_ == 0 and ignore_zero:
+    if count == 0 and ignore_zero:
         continue
 
     if any(re.match(i, name) for i in ignore):
         continue
 
-    counts[name] = all_
+    counts[name] = count
 
 if sort_by_count:
     key = lambda i: i[1]