diff --git a/modules/nixos/ess-helm/default.nix b/modules/nixos/ess-helm/default.nix
index 64516df..4099031 100644
--- a/modules/nixos/ess-helm/default.nix
+++ b/modules/nixos/ess-helm/default.nix
@@ -139,13 +139,13 @@ in
     ingressNginxPort = mkOption {
       type = types.port;
       default = 30080;
-      description = "NodePort for ingress-nginx plain HTTP. Must be in the Kubernetes NodePort range (30000–32767).";
+      description = "NodePort for ingress-nginx plain HTTP. Must be in the Kubernetes NodePort range (30000-32767).";
     };
 
     ingressNginxTlsPort = mkOption {
       type = types.port;
       default = 30443;
-      description = "NodePort reserved for ingress-nginx HTTPS (unused at runtime but required by the chart schema). Must be in the Kubernetes NodePort range (30000–32767).";
+      description = "NodePort reserved for ingress-nginx HTTPS (unused at runtime but required by the chart schema). Must be in the Kubernetes NodePort range (30000-32767).";
     };
 
     ipFamily = mkOption {