diff --git a/README.md b/README.md
index 404d435..b69afac 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ For development:
 | username | String | JDBC username - this is optional as it may be included in the connection string, for many drivers | No | |
 | password | String | JDBC password - this is optional as it may be included in the connection string, for many drivers | No | |
 | statement | Array | An array of strings representing the SQL statement to run. Index 0 is the SQL statement that is prepared, all other array entries are passed in as parameters (in order). A parameter may either be a property of the event (i.e. "@timestamp", or "host") or a formatted string (i.e. "%{host} - %{message}" or "%{message}"). If a key is passed then it will be automatically converted as required for insertion into SQL. If it's a formatted string then it will be passed in verbatim. | Yes |  |
-| unsafe_statement | Boolean | If yes, the statement is evaluated for event fields - this allows you to use dynamic table names, etc. **This is highly dangerous** and you should **not** use this unless you are 100% sure that the field(s) you are passing in are 100% safe. Failure to do so will result in possible SQL injections. Please be aware that there is also a potential performance penalty as each event must be evaluated and inserted into SQL one at a time, where as when this is false multiple events are inserted at once. Example statement: [ "insert into %{table_name_field} (column) values(?)", "fieldname" ] | No | False |
+| unsafe_statement | Boolean | If yes, the statement is evaluated for event fields - this allows you to use dynamic table names, etc. **This is highly dangerous** and you should **not** use this unless you are 100% sure that the field(s) you are passing in are 100% safe. Failure to do so will result in possible SQL injections. Example statement: [ "insert into %{table_name_field} (column) values(?)", "fieldname" ] | No | False |
 | max_pool_size | Number | Maximum number of connections to open to the SQL server at any 1 time | No | 5 |
 | connection_timeout | Number | Number of seconds before a SQL connection is closed | No | 2800 |
 | flush_size | Number | Maximum number of entries to buffer before sending to SQL - if this is reached before idle_flush_time | No | 1000 |