diff --git a/plinth/middleware.py b/plinth/middleware.py
index 877749b86..827af8a48 100644
--- a/plinth/middleware.py
+++ b/plinth/middleware.py
@@ -69,7 +69,8 @@ class SetupMiddleware(MiddlewareMixin):
         if module.setup_helper.is_finished:
             exception = module.setup_helper.collect_result()
             if not exception:
-                messages.success(request, _('Application installed.'))
+                if not setup._is_module_essential(module):
+                    messages.success(request, _('Application installed.'))
             else:
                 if isinstance(exception, PackageException):
                     error_string = getattr(exception, 'error_string',
diff --git a/plinth/tests/test_middleware.py b/plinth/tests/test_middleware.py
index 62abd7c32..9a54a2e84 100644
--- a/plinth/tests/test_middleware.py
+++ b/plinth/tests/test_middleware.py
@@ -122,6 +122,7 @@ class TestSetupMiddleware(TestCase):
         """Test that module installation result is collected properly."""
         resolve.return_value.namespaces = ['mockapp']
         module = Mock()
+        module.is_essential = False
         module.setup_helper.is_finished = True
         module.setup_helper.collect_result.return_value = None
         module.setup_helper.get_state.return_value = 'up-to-date'