diff --git a/example/example.php b/example/example.php
index 9d4ddc7..a43b3a2 100644
--- a/example/example.php
+++ b/example/example.php
@@ -10,7 +10,7 @@
 define('ACCESS_READ', 2);
 define('ACCESS_UPDATE', 3);
 define('ACCESS_DELETE', 4);
-// etc, up to 62
+// etc, up to 63
 
 // some users from storage
 $user = [
diff --git a/src/Bitmask.php b/src/Bitmask.php
index 2eaae74..32f0c45 100644
--- a/src/Bitmask.php
+++ b/src/Bitmask.php
@@ -3,7 +3,7 @@
 
 /**
  * Simple bitmask implementation.
- * Supports only 63 bits (from 0 to 62) on x64 platforms.
+ * Supports only 64 bits (from 0 to 63) on x64 platforms.
  */
 class Bitmask
 {