diff --git a/modules/nixos/zulip.nix b/modules/nixos/zulip.nix
index d53113d..0240756 100644
--- a/modules/nixos/zulip.nix
+++ b/modules/nixos/zulip.nix
@@ -25,7 +25,7 @@
 
       # configure mailserver port
       EMAIL_HOST = config.mailserver.fqdn;
-      EMAUL_USE_TLS = config.mailserver.enableSubmissionSsl;
+      EMAIL_USE_TLS = config.mailserver.enableSubmissionSsl;
       EMAIL_PORT =
         if config.mailserver.enableSubmissionSsl
         then 465