diff --git a/doc/0.getting_started.md b/doc/0.getting_started.md
index a2f7c2c..e580083 100644
--- a/doc/0.getting_started.md
+++ b/doc/0.getting_started.md
@@ -130,14 +130,14 @@ under the `constraints` key. The available constraints are:
 
 * `type` is the type of housing you want, either `RENT` (to rent), `SALE` (to
   buy) or `SHARING` (for a shared housing).
-* `housing_types` is a list of house types you are looking for. Values can be
+* `house_types` is a list of house types you are looking for. Values can be
   `APART` (flat), `HOUSE`, `PARKING`, `LAND`, `OTHER` (everything else) or
   `UNKNOWN` (anything which was not matched with one of the previous
   categories).
 * `area` (in m²), `bedrooms`, `cost` (in currency unit), `rooms`: this is a
   tuple of `(min, max)` values, defining an interval in which the value should
   lie. A `null` value means that any value is within this bound.
-* `postal_codes` is a list of postal codes. You should include any postal code
+* `postal_codes` (as strings) is a list of postal codes. You should include any postal code
   you want, and especially the postal codes close to the precise location you
   want.
 * `time_to` is a dictionary of places to compute travel time to them (using