diff --git a/docs/layers.md b/docs/layers.md
index a2027d70b..d962ba2ad 100644
--- a/docs/layers.md
+++ b/docs/layers.md
@@ -570,7 +570,7 @@ _TIP: Some `landuse` features only exist as point features in OpenStreetMap. Fin
 
 ##### Wetland `kind_detail` values:
 
-The value of the OpenStreetMap `wetland` tag.
+The value of the OpenStreetMap `wetland` tag. Common values are `bog`, `fen`, `mangrove`, `marsh`, `reedbed`, `saltmarsh`, `string_bog`, `swamp`, `tidalflat`, and `wet_meadow`.
 
 ## Places