diff --git a/docs/gallium/tgsi.rst b/docs/gallium/tgsi.rst
index 0ed91bea1a0..047ef0c1310 100644
--- a/docs/gallium/tgsi.rst
+++ b/docs/gallium/tgsi.rst
@@ -3866,7 +3866,7 @@ well.
 | UV                 | XXX TBD      | (0, 0, 0, 1)       | (u, v, 1, 1) |
 |                    |              | [#envmap-bumpmap]_ |              |
 +--------------------+--------------+--------------------+--------------+
-| Z                  | XXX TBD      | (z, z, z, 1)       | (0, z, 0, 1) |
+| Z                  | (z, z, z, z) | (z, z, z, 1)       | (0, z, 0, 1) |
 |                    |              | [#depth-tex-mode]_ |              |
 +--------------------+--------------+--------------------+--------------+
 | S                  | (s, s, s, s) | unknown            | unknown      |