diff --git a/README.md b/README.md
index f46662d..bd7e02e 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,14 @@ Calibre OPDS (and HTML) PHP Server
 
 **Demo:** http://cops-demo.slucas.fr/index.php
 
+## Disclaimers / important information
+
+    You need to indicate the true path of your calibre library and make sure COPS runs under the same user as were the files are located
+
+    Designed to work best with OwnCloud or NextCloud
+
+    Creates an OPDS and HTML server based on a Calibre folder stored in NextCloud
+
 ## Documentation and resources
 
 * Official app website: https://blog.slucas.fr/projects/calibre-opds-php-server/
diff --git a/README_fr.md b/README_fr.md
index 4a906f2..bff1899 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -17,6 +17,14 @@ Calibre OPDS (et HTML) PHP Serveur
 
 **Démo :** http://cops-demo.slucas.fr/index.php
 
+## Avertissements / informations importantes
+
+    You need to indicate the true path of your calibre library and make sure COPS runs under the same user as were the files are located
+
+    Designed to work best with OwnCloud or NextCloud
+
+    Creates an OPDS and HTML server based on a Calibre folder stored in NextCloud
+
 ## Documentations et ressources
 
 * Site officiel de l'app : https://blog.slucas.fr/projects/calibre-opds-php-server/