diff --git a/openff/toolkit/topology/molecule.py b/openff/toolkit/topology/molecule.py
index 0b8877869..d55493da1 100644
--- a/openff/toolkit/topology/molecule.py
+++ b/openff/toolkit/topology/molecule.py
@@ -4144,11 +4144,12 @@ def to_file(self, file_path, file_format, toolkit_registry=GLOBAL_TOOLKIT_REGIST
         else:
             toolkit.to_file_obj(self, file_path, file_format)
 
+    # TODO: This should probably be a class method
     def enumerate_tautomers(
         self,
         max_states=20,
         toolkit_registry=GLOBAL_TOOLKIT_REGISTRY,
-    ) -> List["Molecule"]:
+    ):
         """
         Enumerate the possible tautomers of the current molecule