diff --git a/weboob/core/ouiboube.py b/weboob/core/ouiboube.py
index c0c7f506..d130bffe 100644
--- a/weboob/core/ouiboube.py
+++ b/weboob/core/ouiboube.py
@@ -137,7 +137,7 @@ class Weboob(object):
                 self.logger.error(e)
             if module is None:
                 self.logger.warning(u'Backend "%s" is referenced in %s but was not found. '
-                                     'Hint: is it installed?' % (module_name, self.backends_config.confpath))
+                                     'Hint: try to use "weboob-config update"' % (module_name, self.backends_config.confpath))
                 continue
 
             if instance_name in self.backend_instances:
diff --git a/weboob/core/repositories.py b/weboob/core/repositories.py
index 255bef01..41cb6e3c 100644
--- a/weboob/core/repositories.py
+++ b/weboob/core/repositories.py
@@ -479,7 +479,7 @@ class Repositories(object):
         elif info.version > installed:
             progress.progress(0.3, 'A new version of this module is available')
         else:
-            raise ModuleInstallError('The last version is already installed')
+            raise ModuleInstallError('The last version of %s is already installed' % info.name)
 
         browser = StandardBrowser()
         progress.progress(0.2, 'Downloading module...')