diff --git a/manual/en/basic-mapping.txt b/manual/en/basic-mapping.txt
index 39120851f..09dd391b6 100644
--- a/manual/en/basic-mapping.txt
+++ b/manual/en/basic-mapping.txt
@@ -73,6 +73,7 @@ For example, the Doctrine Mapping Type `string` defines the mapping from a PHP s
 * `text`: Type that maps an SQL CLOB to a PHP string.
 * `object`: Type that maps a SQL CLOB to a PHP object using `serialize()` and `unserialize()`
 * `array`: Type that maps a SQL CLOB to a PHP object using `serialize()` and `unserialize()`
+* `float`: Type that maps a SQL Float (Double Precision) to a PHP double. *IMPORTANT*: Works only with locale settings that use decimal points as separator.
 
 > **NOTE**
 > Doctrine Mapping Types are NOT SQL types and NOT PHP types! They are mapping types