diff --git a/lib/Vroom/I18N/en.pm b/lib/Vroom/I18N/en.pm
index b7266fd..a75d87d 100644
--- a/lib/Vroom/I18N/en.pm
+++ b/lib/Vroom/I18N/en.pm
@@ -16,6 +16,7 @@ our %Lexicon = (
   "ERROR_OCCURRED"                       => "An error occurred",
   "ERROR_NOT_LOGGED_IN"                  => "Sorry, your not logged in",
   "ERROR_DB_UNAVAILABLE"                 => "The database is not available",
+  "ERROR_DB_VERSION_MISMATCH"            => "The database must be updated",
   "JS_REQUIRED"                          => "VROOM needs javascript to work properly",
   "EMAIL_INVITATION"                     => "Video conference invitation",
   "INVITE_SENT_TO_s"                     => "An invitation was sent to the following addresses\n%s",
diff --git a/lib/Vroom/I18N/fr.pm b/lib/Vroom/I18N/fr.pm
index 075e305..5d7d7fe 100644
--- a/lib/Vroom/I18N/fr.pm
+++ b/lib/Vroom/I18N/fr.pm
@@ -18,6 +18,7 @@ our %Lexicon = (
     "ERROR_OCCURRED"                            => "Une erreur est survenue",
     "ERROR_NOT_LOGGED_IN"                       => "Désolé, vous n'êtes pas identifié",,
     "ERROR_DB_UNAVAILABLE"                      => "La base de données n'est pas accessible",
+    "ERROR_DB_VERSION_MISMATCH"                 => "La base de donnée doit être mise à jour",
     "JS_REQUIRED"                               => "VROOM nécessite l'activation du javascript",
     "EMAIL_INVITATION"                          => "Invitation à une conférence vidéo",
     "YOU_ARE_INVITED_TO_A_MEETING"              => "Vous êtes attendu sur un salon de vidéo conférence. " .
diff --git a/vroom.pl b/vroom.pl
index 5cb2c80..2f3667f 100755
--- a/vroom.pl
+++ b/vroom.pl
@@ -73,6 +73,9 @@ if ($config->{'etherpad.uri'} =~ m/https?:\/\/.*/ && $config->{'etherpad.api_key
   }
 }
 
+# GLobal error check
+our $error = undef;
+
 # Load I18N, and declare supported languages
 plugin I18N => {
   namespace => 'Vroom::I18N',
@@ -137,6 +140,21 @@ helper valid_email => sub {
 #   Various helpers      #
 ##########################
 
+# Check if the database schema is the one we expect
+helper check_db_version => sub {
+  my $self = shift;
+  my $sth = eval {
+    $self->db->prepare('SELECT `value`
+                          FROM `config`
+                          WHERE `key`=\'schema_version\'');
+  };
+  $sth->execute;
+  my $ver = undef;
+  $sth->bind_columns(\$ver);
+  $sth->fetch;
+  return ($ver eq Vroom::Constants::DB_VERSION) ? '1' : '0';
+};
+
 # Create a cookie based session
 helper login => sub {
   my $self = shift;
@@ -1962,14 +1980,21 @@ app->hook(before_dispatch => sub {
   $self->stash(config => $config);
 
   # Check db is available
-  if (!$self->db){
-    $self->app->log->info("Connect connect to the database");
+  if ($error){
     return $self->render('error',
-      msg => $self->l('ERROR_DB_UNAVAILABLE'),
-      err => 'ERROR_DB_UNAVAILABLE'
+      msg => $self->l($error),
+      err => $error,
+      room => ''
     );
   }
 });
+
+if (!app->db){
+  $error = 'ERROR_DB_UNAVAILABLE';
+}
+if (!app->check_db_version){
+  $error = 'ERROR_DB_VERSION_MISMATCH';
+}
 # Are we running in hypnotoad ?
 app->config(
   hypnotoad => {