diff --git a/app/routes/collections_page.py b/app/routes/collections_page.py
index 70037a5..ba3a6fa 100644
--- a/app/routes/collections_page.py
+++ b/app/routes/collections_page.py
@@ -105,7 +105,7 @@ def create_collection(collection_id: str = "", instance_id: str = "") -> dict:
             # Get posision in default instance
             position=edr_pydantic.data_queries.EDRQuery(
                 link=edr_pydantic.data_queries.EDRQueryLink(
-                    href=f"{collection_url}position/",
+                    href=f"{collection_url}position",
                     rel="data",
                     variables=edr_pydantic.variables.Variables(
                         query_type="position",
diff --git a/app/routes/position_page.py b/app/routes/position_page.py
index eb5a21d..a023c5b 100644
--- a/app/routes/position_page.py
+++ b/app/routes/position_page.py
@@ -216,13 +216,17 @@ def check_coords_within_bounds(ds: xr.Dataset, point: Point) -> Tuple[bool, str]
     return True, ""
 
 
-@router.get("/collections/isobaric/position")
-async def create_isobaric_page(coords: str) -> dict:
+@router.get("/collections/isobaric/position/")
+async def create_isobaric_page(request: Request, coords: str = "") -> dict:
     """Position.
 
     This is the main function of this API. Needs a string with the coordinates, and will return data for the nearest point.
 
     """
+    if len(coords) == 0:
+        return {
+            "body": f'Error: No coordinates provided. Example: {str(request.base_url)[0:-1]}{request.scope["path"]}?coords=POINT(11 59)'
+        }
     return create_point(coords=coords)