diff --git a/erddapy/core/url.py b/erddapy/core/url.py
index 1fd7c40..9298b10 100644
--- a/erddapy/core/url.py
+++ b/erddapy/core/url.py
@@ -427,7 +427,7 @@ def get_categorize_url(
     url = URL(server) / "categorize" / categorize_by
 
     if value:
-        url = url / "value"
+        url = url / value
     url = url / f"index.{response}"
     return str(url)