diff --git a/indexer-js-queue-handler/__snapshots__/indexer.test.js.snap b/indexer-js-queue-handler/__snapshots__/indexer.test.js.snap
index f21c79f26..1f11c303a 100644
--- a/indexer-js-queue-handler/__snapshots__/indexer.test.js.snap
+++ b/indexer-js-queue-handler/__snapshots__/indexer.test.js.snap
@@ -5,7 +5,7 @@ exports[`Indexer unit tests Indexer.runFunctions() allows imperative execution o
   [
     "mock-hasura-endpoint/v1/graphql",
     {
-      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":82699904,"message":" historical backfill"}}",
+      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":82699904,"message":"Running function buildnear.testnet/test, lag is: NaNms from block timestamp"}}",
       "headers": {
         "Content-Type": "application/json",
         "X-Hasura-Admin-Secret": "mock-hasura-secret",
@@ -75,7 +75,7 @@ exports[`Indexer unit tests Indexer.runFunctions() catches errors 1`] = `
   [
     "mock-hasura-endpoint/v1/graphql",
     {
-      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":456,"message":" historical backfill"}}",
+      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":456,"message":"Running function buildnear.testnet/test, lag is: NaNms from block timestamp"}}",
       "headers": {
         "Content-Type": "application/json",
         "X-Hasura-Admin-Secret": "mock-hasura-secret",
@@ -132,7 +132,7 @@ exports[`Indexer unit tests Indexer.runFunctions() logs provisioning failures 1`
   [
     "mock-hasura-endpoint/v1/graphql",
     {
-      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"morgs.near/test","block_height":82699904,"message":" historical backfill"}}",
+      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"morgs.near/test","block_height":82699904,"message":"Running function morgs.near/test, lag is: NaNms from block timestamp"}}",
       "headers": {
         "Content-Type": "application/json",
         "X-Hasura-Admin-Secret": "mock-hasura-secret",
@@ -202,7 +202,7 @@ exports[`Indexer unit tests Indexer.runFunctions() sets the current historical b
   [
     "mock-hasura-endpoint/v1/graphql",
     {
-      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":456,"message":" historical backfill"}}",
+      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":456,"message":"Running function buildnear.testnet/test historical backfill"}}",
       "headers": {
         "Content-Type": "application/json",
         "X-Hasura-Admin-Secret": "mock-hasura-secret",
@@ -259,7 +259,7 @@ exports[`Indexer unit tests Indexer.runFunctions() should execute all functions
   [
     "mock-hasura-endpoint/v1/graphql",
     {
-      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":456,"message":" historical backfill"}}",
+      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"buildnear.testnet/test","block_height":456,"message":"Running function buildnear.testnet/test, lag is: NaNms from block timestamp"}}",
       "headers": {
         "Content-Type": "application/json",
         "X-Hasura-Admin-Secret": "mock-hasura-secret",
@@ -316,7 +316,7 @@ exports[`Indexer unit tests Indexer.runFunctions() supplies the required role to
   [
     "mock-hasura-endpoint/v1/graphql",
     {
-      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"morgs.near/test","block_height":82699904,"message":" historical backfill"}}",
+      "body": "{"query":"mutation writeLog($function_name: String!, $block_height: numeric!, $message: String!){\\n                insert_indexer_log_entries_one(object: {function_name: $function_name, block_height: $block_height, message: $message}) {id}\\n             }","variables":{"function_name":"morgs.near/test","block_height":82699904,"message":"Running function morgs.near/test, lag is: NaNms from block timestamp"}}",
       "headers": {
         "Content-Type": "application/json",
         "X-Hasura-Admin-Secret": "mock-hasura-secret",
diff --git a/indexer-js-queue-handler/indexer.js b/indexer-js-queue-handler/indexer.js
index faebaff20..63e69a535 100644
--- a/indexer-js-queue-handler/indexer.js
+++ b/indexer-js-queue-handler/indexer.js
@@ -39,7 +39,7 @@ export default class Indexer {
         for (const function_name in functions) {
             try {
                 const indexerFunction = functions[function_name];
-                const runningMessage = `Running function ${function_name}` +  is_historical ? ' historical backfill' : `, lag is: ${lag}ms from block timestamp`;
+                const runningMessage = `Running function ${function_name}` +  (is_historical ? ' historical backfill' : `, lag is: ${lag?.toString()}ms from block timestamp`);
                 console.log(runningMessage);  // Lambda logs
                 const segment = this.deps.awsXray.getSegment(); // segment is immutable, subsegments are mutable
                 const functionSubsegment = segment.addNewSubsegment('indexer_function');