diff --git a/metrics/testnet-monitor.json b/metrics/testnet-monitor.json
index f0604c08a0..eaf479ab88 100644
--- a/metrics/testnet-monitor.json
+++ b/metrics/testnet-monitor.json
@@ -1916,7 +1916,7 @@
       },
       "yaxes": [
         {
-          "format": "dtdurationms",
+          "format": "ms",
           "label": "",
           "logBase": 1,
           "max": null,