diff --git a/README.md b/README.md
index 6bc2fb5..130fd0e 100644
--- a/README.md
+++ b/README.md
@@ -25,8 +25,8 @@ On this input actor searches places on this start url: https://www.google.com/ma
 
 - `searchString` - String will be search on Google maps
 - `proxyConfig` - Apify proxy configuration
-- `lat` - Viewport latitude
-- `lng` - Viewport longitude
+- `lat` - Use it with combination with longitude and zoom to set up viewport to search on.
+- `lng` - Use it with combination with latitude and zoom to set up viewport to search on.
 - `zoom` - Viewport zoom, e.g zoom: 10 -> https://www.google.com/maps/@50.0860729,14.4135326,10z vs zoom: 1 -> https://www.google.com/maps/@50.0860729,14.4135326,10z
 - `maxCrawledPlaces` - Limit places you want to get from crawler