diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8053a6c7..514d6d51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- `filter_bbox`: Clarified that the bounding box is reprojected to the CRS of the spatial data cube dimensions if required.
 - `filter_spatial`: Clarified that a masking get applied for the given geometries. [#469](https://github.com/Open-EO/openeo-processes/issues/469)
 
 ## [2.0.0-rc.1] - 2023-05-25
diff --git a/filter_bbox.json b/filter_bbox.json
index e95d5fa2..b7335847 100644
--- a/filter_bbox.json
+++ b/filter_bbox.json
@@ -39,7 +39,7 @@
         },
         {
             "name": "extent",
-            "description": "A bounding box, which may include a vertical axis (see `base` and `height`).",
+            "description": "A bounding box, which may include a vertical axis (see `base` and `height`).\n\nIf the bounding box is not provided in the coordinate reference system (CRS) of the data cube, the bounding box is reprojected to the CRS of the spatial data cube dimensions.",
             "schema": {
                 "type": "object",
                 "subtype": "bounding-box",