diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 56bb3afe3794f40d8bb5d8c62fcdcd19d74147f1..773747c1b329b74c0dd17b1eb67248e7dfd34de6 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -787,6 +787,7 @@ bit 1  print system memory info
 bit 2  print timer info
 bit 3  print locks info if ``CONFIG_LOCKDEP`` is on
 bit 4  print ftrace buffer
+bit 5  print all printk messages in buffer
 =====  ============================================
 
 So for example to print tasks and memory info on panic, user can::