diff --git a/docs/system.rst b/docs/system.rst
index 395051d..ae1f1c8 100644
--- a/docs/system.rst
+++ b/docs/system.rst
@@ -134,7 +134,7 @@ System
 
     >>> from pydu.cmd import chcp
     >>> chcp(437)
-    <ctive code page number: 437>
+    <active code page number: 437>
     >>> with chcp(437):
     ...     pass
     >>>