diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 55c098984c1..8f737057ccd 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -24,18 +24,6 @@
  *
  */
 
-if (! @include_once("conf/conf.php"))
-{
-  Header("Location: install/index.php");
-}
-else
-{
-  if (! isset($dolibarr_main_db_host))
-    {
-      Header("Location: install/index.php");
-    }
-}
-
 require("master.inc.php");
 
 // Verification du login.
diff --git a/htdocs/master.inc.php b/htdocs/master.inc.php
index 116fe6a4e4c..4c84c1ed1ea 100644
--- a/htdocs/master.inc.php
+++ b/htdocs/master.inc.php
@@ -24,7 +24,17 @@
 define('DOL_VERSION','1.2.0-DEV');
 
 
-
+if (! @include_once("conf/conf.php"))
+{
+  Header("Location: install/index.php");
+}
+else
+{
+  if (! isset($dolibarr_main_db_host))
+    {
+      Header("Location: install/index.php");
+    }
+}
 
 define('DOL_DOCUMENT_ROOT', $dolibarr_main_document_root);
 define('DOL_DATA_ROOT', $dolibarr_main_data_root);