diff --git a/setup.py b/setup.py
index 6893746cd7..c73ef8c9e0 100644
--- a/setup.py
+++ b/setup.py
@@ -43,6 +43,7 @@ def read(filename):
     "collective.MockMailHost",
     "plone.app.caching",
     "plone.app.contenttypes[test]",
+    "plone.app.discussion[test]",
     "plone.app.testing",
     "plone.api",
     "requests",
diff --git a/src/plone/restapi/testing.py b/src/plone/restapi/testing.py
index 7ed7c0358d..adc4d184b3 100644
--- a/src/plone/restapi/testing.py
+++ b/src/plone/restapi/testing.py
@@ -135,6 +135,9 @@ def setUpPloneSite(self, portal):
 
         set_supported_languages(portal)
 
+        if portal.portal_setup.profileExists("plone.app.discussion:default"):
+            applyProfile(portal, "plone.app.discussion:default")
+
         applyProfile(portal, "plone.restapi:default")
         applyProfile(portal, "plone.restapi:testing")
         add_catalog_indexes(portal, DX_TYPES_INDEXES)