diff --git a/altair/utils/core.py b/altair/utils/core.py
index 640d337f3..8ecaa896b 100644
--- a/altair/utils/core.py
+++ b/altair/utils/core.py
@@ -556,7 +556,7 @@ def parse_shorthand(
             + "is not one of the valid encoding data types: {}.".format(
                 ", ".join(TYPECODE_MAP.values())
             )
-            + "\nFor more details, see https://altair-viz.github.io/altair-docs/user_guide/encodings/index.html#encoding-data-types. "
+            + "\nFor more details, see https://altair-viz.github.io/user_guide/encodings/index.html#encoding-data-types. "
             + "If you are trying to use a column name that contains a colon, "
             + 'prefix it with a backslash; for example "column\\:name" instead of "column:name".'
         )