diff --git a/odoo/modules/graph.py b/odoo/modules/graph.py
index efe8629b466..752237b4b0a 100644
--- a/odoo/modules/graph.py
+++ b/odoo/modules/graph.py
@@ -3,6 +3,7 @@
 
 """ Modules dependency graph. """
 
+import functools
 import itertools
 import logging
 
@@ -11,6 +12,15 @@ import odoo.tools as tools
 
 _logger = logging.getLogger(__name__)
 
+
+@functools.lru_cache(maxsize=1)
+def _ignored_modules(cr):
+    result = ['studio_customization']
+    if tools.sql.column_exists(cr, 'ir_module_module', 'imported'):
+        cr.execute('SELECT name FROM ir_module_module WHERE imported')
+        result += [m[0] for m in cr.fetchall()]
+    return result
+
 class Graph(dict):
     """ Modules dependency graph.
 
@@ -61,7 +71,7 @@ class Graph(dict):
             info = odoo.modules.module.get_manifest(module)
             if info and info['installable']:
                 packages.append((module, info)) # TODO directly a dict, like in get_modules_with_version
-            elif module != 'studio_customization':
+            elif module not in _ignored_modules(cr):
                 _logger.warning('module %s: not installable, skipped', module)
 
         dependencies = dict([(p, info['depends']) for p, info in packages])