diff --git a/Src/Metrics.NET.Prometheus/PrometheusReportExtensions.cs b/Src/Metrics.NET.Prometheus/PrometheusReportExtensions.cs
index 0b419b7..9d5b4fd 100644
--- a/Src/Metrics.NET.Prometheus/PrometheusReportExtensions.cs
+++ b/Src/Metrics.NET.Prometheus/PrometheusReportExtensions.cs
@@ -17,7 +17,8 @@ public static class PrometheusReportExtensions
         /// <returns></returns>
         public static MetricsEndpointReports WithPrometheusEndpointReport(this MetricsEndpointReports config, string path = "/prometheus")
         {
-            return WithPrometheusEndpointReport(config, path, Encoding.ASCII);
+            Encoding utf8WithoutBom = new UTF8Encoding(false);
+            return WithPrometheusEndpointReport(config, path, utf8WithoutBom);
         }
 
         /// <summary>