diff --git a/Utilities/Sphinx/create_identifiers.py b/Utilities/Sphinx/create_identifiers.py
index 3fe3fcbe52..4513434a67 100755
--- a/Utilities/Sphinx/create_identifiers.py
+++ b/Utilities/Sphinx/create_identifiers.py
@@ -22,6 +22,7 @@ for line in lines:
 
   mapping = (("command", "command"),
              ("variable", "variable"),
+             ("generator", "generator"),
              ("target property", "prop_tgt"),
              ("test property", "prop_test"),
              ("source file property", "prop_sf"),