diff --git a/nixos/modules/services/monitoring/prometheus/default.nix b/nixos/modules/services/monitoring/prometheus/default.nix
index 9103a6f932d..bd74e1a9cdb 100644
--- a/nixos/modules/services/monitoring/prometheus/default.nix
+++ b/nixos/modules/services/monitoring/prometheus/default.nix
@@ -468,7 +468,7 @@ let
         '';
       };
 
-      value = mkOption {
+      values = mkOption {
         type = types.listOf types.str;
         default = [];
         description = ''