diff --git a/indexer-js-queue-handler/__snapshots__/metrics.test.js.snap b/indexer-js-queue-handler/__snapshots__/metrics.test.js.snap
index 3fa7e7bac..7319a7d61 100644
--- a/indexer-js-queue-handler/__snapshots__/metrics.test.js.snap
+++ b/indexer-js-queue-handler/__snapshots__/metrics.test.js.snap
@@ -20,7 +20,7 @@ exports[`Metrics writes the block height for an indexer function 1`] = `
           },
           {
             "Name": "HISTORICAL",
-            "Value": false,
+            "Value": "false",
           },
         ],
         "MetricName": "INDEXER_FUNCTION_LATEST_BLOCK_HEIGHT",
diff --git a/indexer-js-queue-handler/metrics.js b/indexer-js-queue-handler/metrics.js
index de0882052..90434f8bb 100644
--- a/indexer-js-queue-handler/metrics.js
+++ b/indexer-js-queue-handler/metrics.js
@@ -32,7 +32,7 @@ export default class Metrics {
                             },
                             {
                                 Name: "HISTORICAL",
-                                Value: isHistorical,
+                                Value: isHistorical.toString(),
                             },
                         ],
                         Unit: "None",