diff --git a/src/flake8_bugbear/plugins/function_call_argument_default.rs b/src/flake8_bugbear/plugins/function_call_argument_default.rs
index 035b99c98d..c162fcc93a 100644
--- a/src/flake8_bugbear/plugins/function_call_argument_default.rs
+++ b/src/flake8_bugbear/plugins/function_call_argument_default.rs
@@ -8,6 +8,7 @@ use crate::check_ast::Checker;
 use crate::checks::{Check, CheckKind};
 use crate::flake8_bugbear::plugins::mutable_argument_default::is_mutable_func;
 
+// TODO(charlie): Verify imports for each of the imported members.
 const IMMUTABLE_FUNCS: [&str; 11] = [
     "tuple",
     "frozenset",
diff --git a/src/flake8_bugbear/plugins/mutable_argument_default.rs b/src/flake8_bugbear/plugins/mutable_argument_default.rs
index 7b7da70ff5..57017dbdf7 100644
--- a/src/flake8_bugbear/plugins/mutable_argument_default.rs
+++ b/src/flake8_bugbear/plugins/mutable_argument_default.rs
@@ -4,6 +4,7 @@ use crate::ast::types::Range;
 use crate::check_ast::Checker;
 use crate::checks::{Check, CheckKind};
 
+// TODO(charlie): Verify imports for each of the imported members.
 pub fn is_mutable_func(expr: &Expr) -> bool {
     match &expr.node {
         ExprKind::Name { id, .. }