diff --git a/doc/user/stored-procedures.xml b/doc/user/stored-procedures.xml
index 29d251f130e93b9b2d7a18c3e1137affb5e3b661..79b2ff32fa1e622388383ba2934b0316c1bec0e0 100644
--- a/doc/user/stored-procedures.xml
+++ b/doc/user/stored-procedures.xml
@@ -852,7 +852,7 @@ lua box.dostring('local f = function(key) t=box.select(0, 0, key); if t ~= nil t
 ---
  - 1: {'I am a duplicate'}
 ...
-localhost> lua box.auto_increment(2, "I am a duplicate")
+localhost> lua box.auto_increment(0, "I am a duplicate")
 ---
  - 2: {'I am a duplicate'}
 ...