diff --git a/htdocs/admin/produit.php b/htdocs/admin/produit.php
index 017ccfad393..72efdcbcc15 100644
--- a/htdocs/admin/produit.php
+++ b/htdocs/admin/produit.php
@@ -111,6 +111,7 @@ else if ($_POST["action"] == 'confirmDeleteProdLineInForm')
 else if ($_POST["action"] == 'ProductCanvasAbility')
 {
 	dolibarr_set_const($db, "PRODUCT_CANVAS_ABILITY", $_POST["ProductCanvasAbility"]);
+	dolibarr_set_const($db, "MAIN_NEED_SMARTY", $_POST["ProductCanvasAbility"]);
 	// Create temp directory for smarty
 	if (! empty($dolibarr_smarty_compile)) create_exdir($dolibarr_smarty_compile);
 	if (! empty($dolibarr_smarty_cache))   create_exdir($dolibarr_smarty_cache);
diff --git a/htdocs/lib/product.lib.php b/htdocs/lib/product.lib.php
index 6a1cd99e4bb..1e730baf8e6 100644
--- a/htdocs/lib/product.lib.php
+++ b/htdocs/lib/product.lib.php
@@ -124,7 +124,7 @@ function product_prepare_head($product, $user)
 			if ($values[2]) $langs->load($values[2]);
 			$head[$h][0] = eregi_replace('__ID__',$product->id,$values[3]);
 			$head[$h][1] = $langs->trans($values[1]);
-			$head[$h][2] = 'module'.$i;
+			$head[$h][2] = 'tab'.$values[1];
 			$h++;
 		}
 	}
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 679a91d7d8a..68f4c0940d2 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -507,23 +507,22 @@ else                        // Si utilisateur externe
 // Only rodolphe and auguria menu manage canvas menu (auguria not correctly yet)
 if (! eregi('^rodolphe',$conf->left_menu) && ! eregi('^auguria',$conf->left_menu)) $conf->global->PRODUCT_CANVAS_ABILITY=0;
 
-// Si besoin de smarty
-if ($conf->global->PRODUCT_CANVAS_ABILITY)
+
+// For modules using Smarty
+if ($conf->global->MAIN_NEED_SMARTY)
 {
 	// SMARTY
 	// Definit dans le fichier de conf
 	// $dolibarr_smarty_libs_dir="/home/www/dolibarr/external-libs/smarty/libs/";
 	// $dolibarr_smarty_compile="/home/www/dolibarr/documents/smarty/templates/temp";
 	// $dolibarr_smarty_cache="/home/www/dolibarr/documents/smarty/cache/temp";
-
-	if (empty($dolibarr_smarty_libs_dir)) $dolibarr_smarty_libs_dir=$dolibarr_main_document_root.'/../external-libs/smarty/libs/';
-	if (empty($dolibarr_smarty_compile))  $dolibarr_smarty_compile=$dolibarr_main_data_root.'/smarty/templates/temp';
-	if (empty($dolibarr_smarty_cache))    $dolibarr_smarty_cache=$dolibarr_main_data_root.'/smarty/cache/temp';
-
+	if (empty($dolibarr_smarty_libs_dir)) $dolibarr_smarty_libs_dir=DOL_DATA_ROOT.'/../external-libs/smarty/libs/';
+	if (empty($dolibarr_smarty_compile))  $dolibarr_smarty_compile=DOL_DATA_ROOT.'/smarty/templates/temp';
+	if (empty($dolibarr_smarty_cache))    $dolibarr_smarty_cache=DOL_DATA_ROOT.'/smarty/cache/temp';
+	
 	$smarty_libs = $dolibarr_smarty_libs_dir. "Smarty.class.php";
 	if (file_exists ($smarty_libs))
 	{
-
 		require_once($smarty_libs);
 		$smarty = new Smarty();
 		$smarty->compile_dir = $dolibarr_smarty_compile;