diff --git a/doc/database/db_locks.md b/doc/database/db_locks.md
index 004ebd1c1..4de6fbf96 100644
--- a/doc/database/db_locks.md
+++ b/doc/database/db_locks.md
@@ -6,6 +6,6 @@ Table locks
 | id      | sequential ID    | int(11)          | NO   | PRI | NULL                | auto_increment |
 | name    |                  | varchar(128)     | NO   |     |                     |                |
 | locked  |                  | tinyint(1)       | NO   |     | 0                   |                |
-| pid     |                  | int(10) unsigned | NO   |     | 0                   |                |
+| pid     | Process ID       | int(10) unsigned | NO   |     | 0                   |                |
 
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