diff --git a/drupal2spip_lal/base/apps.py b/drupal2spip_lal/base/apps.py
index cd9faf9..51b0108 100644
--- a/drupal2spip_lal/base/apps.py
+++ b/drupal2spip_lal/base/apps.py
@@ -4,3 +4,6 @@ from django.apps import AppConfig
 class BaseConfig(AppConfig):
     name = 'drupal2spip_lal.base'
     verbose_name = "Base"
+
+    def ready(self):
+        from . import checks  # noqa
diff --git a/drupal2spip_lal/base/checks.py b/drupal2spip_lal/base/checks.py
new file mode 100644
index 0000000..6752d12
--- /dev/null
+++ b/drupal2spip_lal/base/checks.py
@@ -0,0 +1,61 @@
+import io
+from difflib import unified_diff
+
+from django.core.checks import Error, Warning, register
+from django.core.management import call_command
+
+no_models = Warning(
+    "Unable to import drupal2spip_lal/drupal/models.py",
+    hint='Verify your database settings and that your DB has been '
+    'inspected.',
+    obj='drupal2spip_lal.base',
+    id='drupal2spip_lal.W003',
+)
+
+
+@register()
+def check_inspected_database(app_configs, **kwargs):
+    buf = io.StringIO()
+    rc = call_command('inspectdb', '--database=drupal', stdout=buf)
+    if rc is not None:
+        return [
+            Error(
+                "Command inspectdb failed.",
+                hint='Try to launch "./manage.py inspectdb --database=drupal" '
+                'and report an issue to <tech@cliss21.org>.',
+                obj='drupal2spip_lal.base',
+                id='drupal2spip_lal.E001',
+            )
+        ]
+
+    buf.seek(0)
+    inspected_db = buf.read()
+    buf.close()
+    try:
+        with open('drupal2spip_lal/drupal/models.py', 'r') as f:
+            if f.read() != inspected_db:
+                f.seek(0)
+                for line in unified_diff(
+                    f.read().split('\n'), inspected_db.split('\n')
+                ):
+                    print(line)
+                return [
+                    Warning(
+                        "Outdated drupal2spip_lal/drupal/models.py",
+                        hint='Refresh it using "make inspectdb" '
+                        'and then run migrations.',
+                        obj='drupal2spip_lal.base',
+                        id='drupal2spip_lal.W002',
+                    )
+                ]
+    except Exception:
+        return [
+            Warning(
+                "Missing drupal2spip_lal/drupal/models.py",
+                hint='Create it using "make inspectdb" '
+                'and then run migrations.',
+                obj='drupal2spip_lal.base',
+                id='drupal2spip_lal.W001',
+            )
+        ]
+    return []