diff --git a/doc/database/db_conversation.md b/doc/database/db_conversation.md
index 8b923ec041..32d030cb15 100644
--- a/doc/database/db_conversation.md
+++ b/doc/database/db_conversation.md
@@ -1,14 +1,14 @@
 Table conversation
 ==================
 
-| Field             | Description   | Type                | Null | Key | Default             | Extra          |
-|-------------------| ------------- |---------------------|------|-----|---------------------|----------------|
-| item-uri          |               | varbinary(255)      | NO   | PRI | NULL                |                |
-| reply-to-uri      |               | varbinary(255)      | NO   |     |                     |                |
-| conversation-uri  |               | varbinary(255)      | NO   |     |                     |                |
-| conversation-href |               | varbinary(255)      | NO   |     |                     |                |
-| protocol          |               | tinyint(1) unsigned | NO   |     | 0                   |                |
-| source            |               | mediumtext          | NO   |     |                     |                |
-| received          |               | datetime            | NO   |     | 0001-01-01          |                |
+| Field             | Description                        | Type                | Null | Key | Default             | Extra          |
+|-------------------| ---------------------------------- |---------------------|------|-----|---------------------|----------------|
+| item-uri          | URI of the item                    | varbinary(255)      | NO   | PRI | NULL                |                |
+| reply-to-uri      | URI to which this item is a reply  | varbinary(255)      | NO   |     |                     |                |
+| conversation-uri  | GNU Social conversation URI        | varbinary(255)      | NO   |     |                     |                |
+| conversation-href | GNU Social conversation link       | varbinary(255)      | NO   |     |                     |                |
+| protocol          | The protocol of the item           | tinyint(1) unsigned | NO   |     | 0                   |                |
+| source            | Original source                    | mediumtext          | NO   |     |                     |                |
+| received          | Receiving date                     | datetime            | NO   |     | 0001-01-01          |                |
 
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