diff --git a/htdocs/lib/product.lib.php b/htdocs/lib/product.lib.php
index e57b9f80b81..3d297d2a3fb 100644
--- a/htdocs/lib/product.lib.php
+++ b/htdocs/lib/product.lib.php
@@ -123,7 +123,19 @@ function product_prepare_head($product, $user)
 	  $h++;
 	}
     }
-  
+
+  /*
+   * Onglets additionnels pour les canvas
+   */
+  if(is_array($product->onglets))
+    {
+      foreach ($product->onglets as $onglet)
+	{
+	  $head[$h] = $onglet;
+	  $h++;
+	}
+    }
+
   return $head;
 }