diff --git a/django/core/template/__init__.py b/django/core/template/__init__.py
index c399c93c14..ed502c5a17 100644
--- a/django/core/template/__init__.py
+++ b/django/core/template/__init__.py
@@ -665,6 +665,8 @@ def resolve_variable(path, context):
                             except SilentVariableFailure:
                                 current = ''
                             except TypeError: # arguments *were* required
+                                # GOTCHA: This will also catch any TypeError
+                                # raised in the function itself.
                                 current = '' # invalid method call
                 except (TypeError, AttributeError):
                     try: # list-index lookup