diff --git a/packages/caliper-core/lib/worker/tx-observers/prometheus-push-tx-observer.js b/packages/caliper-core/lib/worker/tx-observers/prometheus-push-tx-observer.js
index 3cbb4d7da..972c565f9 100644
--- a/packages/caliper-core/lib/worker/tx-observers/prometheus-push-tx-observer.js
+++ b/packages/caliper-core/lib/worker/tx-observers/prometheus-push-tx-observer.js
@@ -167,12 +167,12 @@ class PrometheusPushTxObserver extends TxObserverInterface {
             for (const result of results) {
                 // pass/fail status from result.GetStatus()
                 this.counterTxFinished.labels(result.GetStatus()).inc();
-                this.histogramLatency.labels(result.GetStatus()).observe(result.GetTimeFinal() - result.GetTimeCreate());
+                this.histogramLatency.labels(result.GetStatus()).observe((result.GetTimeFinal() - result.GetTimeCreate()) / 1000);
             }
         } else {
             // pass/fail status from result.GetStatus()
             this.counterTxFinished.labels(results.GetStatus()).inc();
-            this.histogramLatency.labels(results.GetStatus()).observe((results.GetTimeFinal() - results.GetTimeCreate())/1000);
+            this.histogramLatency.labels(results.GetStatus()).observe((results.GetTimeFinal() - results.GetTimeCreate()) / 1000);
         }
     }
 
diff --git a/packages/caliper-core/lib/worker/tx-observers/prometheus-tx-observer.js b/packages/caliper-core/lib/worker/tx-observers/prometheus-tx-observer.js
index 6125fbf1e..eb9571f85 100644
--- a/packages/caliper-core/lib/worker/tx-observers/prometheus-tx-observer.js
+++ b/packages/caliper-core/lib/worker/tx-observers/prometheus-tx-observer.js
@@ -165,12 +165,12 @@ class PrometheusTxObserver extends TxObserverInterface {
             for (const result of results) {
                 // pass/fail status from result.GetStatus()
                 this.counterTxFinished.labels(result.GetStatus()).inc();
-                this.histogramLatency.labels(result.GetStatus()).observe(result.GetTimeFinal() - result.GetTimeCreate());
+                this.histogramLatency.labels(result.GetStatus()).observe((result.GetTimeFinal() - result.GetTimeCreate()) / 1000);
             }
         } else {
             // pass/fail status from result.GetStatus()
             this.counterTxFinished.labels(results.GetStatus()).inc();
-            this.histogramLatency.labels(results.GetStatus()).observe((results.GetTimeFinal() - results.GetTimeCreate())/1000);
+            this.histogramLatency.labels(results.GetStatus()).observe((results.GetTimeFinal() - results.GetTimeCreate()) / 1000);
         }
     }
 }
diff --git a/packages/caliper-core/test/worker/tx-observers/prometheus-push-tx-observer.js b/packages/caliper-core/test/worker/tx-observers/prometheus-push-tx-observer.js
index ad6767a45..2368cf296 100644
--- a/packages/caliper-core/test/worker/tx-observers/prometheus-push-tx-observer.js
+++ b/packages/caliper-core/test/worker/tx-observers/prometheus-push-tx-observer.js
@@ -36,7 +36,7 @@ class Utils {
 
     /**
      *
-     * @return {boolean} the fake path
+     * @return {boolean} if the process is a forked process
      */
     static isForkedProcess() {
         return false;
diff --git a/packages/caliper-core/test/worker/tx-observers/prometheus-tx-observer.js b/packages/caliper-core/test/worker/tx-observers/prometheus-tx-observer.js
index e5585e8a3..08b1ac67d 100644
--- a/packages/caliper-core/test/worker/tx-observers/prometheus-tx-observer.js
+++ b/packages/caliper-core/test/worker/tx-observers/prometheus-tx-observer.js
@@ -36,7 +36,7 @@ class Utils {
 
     /**
      *
-     * @return {boolean} the fake path
+     * @return {boolean} if the process is a forked process
      */
     static isForkedProcess() {
         return false;