diff --git a/edc_adverse_event/modeladmin_mixins/death_report_admin_mixin.py b/edc_adverse_event/modeladmin_mixins/death_report_admin_mixin.py
index 15ffca1..b10d032 100644
--- a/edc_adverse_event/modeladmin_mixins/death_report_admin_mixin.py
+++ b/edc_adverse_event/modeladmin_mixins/death_report_admin_mixin.py
@@ -3,7 +3,7 @@
 from django.contrib import admin
 from django.contrib.admin import display
 from django.template.loader import render_to_string
-from django.urls import reverse
+from django.urls import NoReverseMatch, reverse
 from django_audit_fields.admin import audit_fieldset_tuple
 from edc_action_item import action_fieldset_tuple
 from edc_action_item.modeladmin_mixins import ActionItemModelAdminMixin
@@ -167,11 +167,15 @@ def ae_button(self, obj):
 
     @display(description="TMG")
     def tmg_button(self, obj):
+        try:
+            changelist_url = reverse(
+                f"{self.admin_site.name}:{obj._meta.app_label}_deathreporttmg_changelist"
+            )
+        except NoReverseMatch:
+            changelist_url = None
         context = dict(
             subject_identifier=obj.subject_identifier,
-            changelist_url=reverse(
-                f"{self.admin_site.name}:{obj._meta.app_label}_deathreporttmg_changelist"
-            ),
+            changelist_url=changelist_url,
         )
         return render_to_string(
             template_name="edc_adverse_event/tmg_button.html", context=context
diff --git a/edc_adverse_event/templates/edc_adverse_event/tmg_button.html b/edc_adverse_event/templates/edc_adverse_event/tmg_button.html
index b44c676..f1085b3 100644
--- a/edc_adverse_event/templates/edc_adverse_event/tmg_button.html
+++ b/edc_adverse_event/templates/edc_adverse_event/tmg_button.html
@@ -1 +1 @@
-<a style="white-space: nowrap;background-color:darkgray;color: black" title="Go TMG reports" class="button" href="{{ changelist_url }}?q={{ subject_identifier }}">TMG</a>
+<a style="white-space: nowrap;background-color:darkgray;color: black" {% if changelist_url %}title="Go TMG reports"{% endif %} class="button" {% if changelist_url %}href="{{ changelist_url }}?q={{ subject_identifier }}"{% else %} disabled {% endif %}>TMG</a>
diff --git a/edc_adverse_event/view_mixins/ae/ae_listboard_view_mixin.py b/edc_adverse_event/view_mixins/ae/ae_listboard_view_mixin.py
index ed9323e..918fb02 100644
--- a/edc_adverse_event/view_mixins/ae/ae_listboard_view_mixin.py
+++ b/edc_adverse_event/view_mixins/ae/ae_listboard_view_mixin.py
@@ -31,7 +31,6 @@ class AeListboardViewMixin(
     listboard_back_url = "ae_home_url"
     home_url = "ae_home_url"
     listboard_panel_title = "Adverse Events: AE Initial and Follow-up Reports"
-    # model_wrapper_cls = ActionItemModelWrapper
 
     listboard_template = "ae_listboard_template"
     listboard_url = "ae_listboard_url"
diff --git a/edc_adverse_event/view_mixins/ae/death_report_listboard_view_mixin.py b/edc_adverse_event/view_mixins/ae/death_report_listboard_view_mixin.py
index 8fbecc0..77ee115 100644
--- a/edc_adverse_event/view_mixins/ae/death_report_listboard_view_mixin.py
+++ b/edc_adverse_event/view_mixins/ae/death_report_listboard_view_mixin.py
@@ -44,7 +44,6 @@ class DeathReportListboardViewMixin(
         "left of the subject's identifier."
     )
 
-    # model_wrapper_cls = ActionItemModelWrapper
     navbar_selected_item = "ae_home"
     ordering = "-report_datetime"
     paginate_by = 25
diff --git a/edc_adverse_event/view_mixins/tmg/tmg_ae_listboard_view_mixin.py b/edc_adverse_event/view_mixins/tmg/tmg_ae_listboard_view_mixin.py
index 404c652..fa13b59 100644
--- a/edc_adverse_event/view_mixins/tmg/tmg_ae_listboard_view_mixin.py
+++ b/edc_adverse_event/view_mixins/tmg/tmg_ae_listboard_view_mixin.py
@@ -34,7 +34,6 @@ class TmgAeListboardViewMixin(
     listboard_panel_title = "TMG: AE Reports"
     listboard_view_permission_codename = "edc_adverse_event.view_tmg_listboard"
 
-    # model_wrapper_cls = TmgActionItemModelWrapper
     navbar_name = get_default_navbar()
     navbar_selected_item = "tmg_home"
     ordering = "-report_datetime"
diff --git a/edc_adverse_event/views/tmg/death_listboard_view.py b/edc_adverse_event/views/tmg/death_listboard_view.py
index c5d696e..c0330ec 100644
--- a/edc_adverse_event/views/tmg/death_listboard_view.py
+++ b/edc_adverse_event/views/tmg/death_listboard_view.py
@@ -29,7 +29,6 @@ class DeathListboardView(
     listboard_model_manager_name = "objects"
     listboard_panel_title = "TMG: Death Reports"
     listboard_view_permission_codename = "edc_adverse_event.view_tmg_listboard"
-    # model_wrapper_cls = DeathReportModelWrapper
     navbar_selected_item = "tmg_home"
     ordering = "-created"
     paginate_by = 25