diff --git a/global-config.rsc b/global-config.rsc
index 5df7b34..b0f0c64 100644
--- a/global-config.rsc
+++ b/global-config.rsc
@@ -56,9 +56,9 @@
 # install the module:
 # $ScriptInstallUpdate mod/notification-ntfy
 :global NtfyServer "ntfy.sh";
-:global NtfyServerUser [];
-:global NtfyServerPass [];
-:global NtfyServerToken [];
+:global NtfyServerUser "";
+:global NtfyServerPass "";
+:global NtfyServerToken "";
 :global NtfyTopic "";
 
 # It is possible to override e-mail, Telegram, Matrix and Ntfy setting