diff --git a/wagtail/contrib/settings/__init__.py b/wagtail/contrib/settings/__init__.py
index e69de29bb2..8ce3a341d6 100644
--- a/wagtail/contrib/settings/__init__.py
+++ b/wagtail/contrib/settings/__init__.py
@@ -0,0 +1 @@
+default_app_config = 'wagtail.contrib.settings.apps.WagtailSettingsAppConfig'
diff --git a/wagtail/contrib/table_block/__init__.py b/wagtail/contrib/table_block/__init__.py
index e69de29bb2..e401ea7f43 100644
--- a/wagtail/contrib/table_block/__init__.py
+++ b/wagtail/contrib/table_block/__init__.py
@@ -0,0 +1 @@
+default_app_config = 'wagtail.contrib.table_block.apps.WagtailTableBlockAppConfig'
diff --git a/wagtail/contrib/table_block/apps.py b/wagtail/contrib/table_block/apps.py
new file mode 100644
index 0000000000..43a5e5fe66
--- /dev/null
+++ b/wagtail/contrib/table_block/apps.py
@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class WagtailTableBlockAppConfig(AppConfig):
+    name = 'wagtail.contrib.table_block'
+    label = 'wagtailtableblock'
+    verbose_name = "Wagtail table block"
diff --git a/wagtail/sites/__init__.py b/wagtail/sites/__init__.py
index e69de29bb2..ddcf063cde 100644
--- a/wagtail/sites/__init__.py
+++ b/wagtail/sites/__init__.py
@@ -0,0 +1 @@
+default_app_config = 'wagtail.sites.apps.WagtailSitesAppConfig'
diff --git a/wagtail/sites/apps.py b/wagtail/sites/apps.py
new file mode 100644
index 0000000000..fd74f22b1e
--- /dev/null
+++ b/wagtail/sites/apps.py
@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class WagtailSitesAppConfig(AppConfig):
+    name = 'wagtail.sites'
+    label = 'wagtailsites'
+    verbose_name = "Wagtail sites"