diff --git a/tools/local_run.py b/tools/local_run.py
index 4f5b7929f0c9c8765a9b2f989b2d145d74b109ae..d7dbbc05619e0734397522ef0a42267e6c776278 100644
--- a/tools/local_run.py
+++ b/tools/local_run.py
@@ -43,13 +43,14 @@
 
 # Hide output unless there is an error
 p = subprocess.Popen(
-    [sys.executable, os.path.join(project, 'scripts', 'weboob-config'), 'update'],
+    [sys.executable, os.path.join(project, 'scripts', 'weboob-config'), 'update', '-d'],
     env=env,
-    stdout=subprocess.PIPE)
+    stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 s = p.communicate()
 if p.returncode != 0:
     print(s[0])
-    sys.exit(p.returncode)
+    if p.returncode > 1:
+        sys.exit(p.returncode)
 
 if os.path.exists(script):
     spath = script
diff --git a/weboob/applications/weboobcfg/weboobcfg.py b/weboob/applications/weboobcfg/weboobcfg.py
index 53b6b61d2cc45e932e0026beb3d9805a75f63969..fcef93375158d58d8af3a0b12adab1b5d9143cda 100644
--- a/weboob/applications/weboobcfg/weboobcfg.py
+++ b/weboob/applications/weboobcfg/weboobcfg.py
@@ -320,3 +320,8 @@ def do_update(self, line):
         Update weboob.
         """
         self.weboob.update(ConsoleProgress(self))
+        if self.weboob.repositories.errors:
+            print('Errors building modules: %s' % ', '.join(self.weboob.repositories.errors.keys()), file=self.stderr)
+            if not self.options.debug:
+                print('Use --debug to get more information.', file=self.stderr)
+            return 1
diff --git a/weboob/core/repositories.py b/weboob/core/repositories.py
index dc8cbe80c0e0aa683f2266a18e5e87c252994f13..47942be5fb82f5c86b554d290009701197c1a93f 100644
--- a/weboob/core/repositories.py
+++ b/weboob/core/repositories.py
@@ -132,6 +132,7 @@ def __init__(self, url):
         self.key_update = 0
         self.obsolete = False
         self.logger = getLogger('repository')
+        self.errors = {}
 
         self.modules = {}
 
@@ -275,6 +276,7 @@ def build_index(self, path, filename):
         """
         self.logger.debug('Rebuild index')
         self.modules.clear()
+        self.errors.clear()
 
         if os.path.isdir(os.path.join(path, self.KEYDIR)):
             self.signed = True
@@ -296,8 +298,10 @@ def build_index(self, path, filename):
                     if fp:
                         fp.close()
             except Exception as e:
-                print('Unable to build module %s: [%s] %s' % (name, type(e).__name__, e), file=sys.stderr)
-                self.logger.debug(get_backtrace(e))
+                self.logger.warning('Unable to build module %s: [%s] %s' % (name, type(e).__name__, e))
+                bt = get_backtrace(e)
+                self.logger.debug(bt)
+                self.errors[name] = bt
             else:
                 m = ModuleInfo(module.name)
                 m.version = self.get_tree_mtime(module_path)
@@ -745,6 +749,17 @@ def url2filename(url):
         """
         return ''.join([l if l.isalnum() else '_' for l in url])
 
+    def __iter__(self):
+        for repository in self.repositories:
+            yield repository
+
+    @property
+    def errors(self):
+        errors = {}
+        for repository in self:
+            errors.update(repository.errors)
+        return errors
+
 
 class InvalidSignature(Exception):
     def __init__(self, filename):