diff --git a/nixos-module.nix b/nixos-module.nix
index 93b644a..9ade68f 100644
--- a/nixos-module.nix
+++ b/nixos-module.nix
@@ -166,7 +166,7 @@ in
         Statement "select count(distinct host) from instance_tokens;"
         <Result>
           Type gauge
-          InstancePrefix "unique"
+          InstancePrefix "unique_tokens"
           ValuesFrom "count"
         </Result>
       </Query>
@@ -174,7 +174,7 @@ in
         Statement "select count(*) from instance_tokens;"
         <Result>
           Type gauge
-          InstancePrefix "total"
+          InstancePrefix "total_tokens"
           ValuesFrom "count"
         </Result>
       </Query>