diff --git a/nightly.serilog.xamarin/nightly.serilog.xamarin/Enrichers/SessionIdEnricher.cs b/nightly.serilog.xamarin/nightly.serilog.xamarin/Enrichers/SessionIdEnricher.cs
index 67b4b6e..10701fd 100644
--- a/nightly.serilog.xamarin/nightly.serilog.xamarin/Enrichers/SessionIdEnricher.cs
+++ b/nightly.serilog.xamarin/nightly.serilog.xamarin/Enrichers/SessionIdEnricher.cs
@@ -7,10 +7,16 @@ namespace nightly.serilog.xamarin.Enrichers
     public class SessionIdEnricher : ILogEventEnricher
     {
         private LogEventProperty _cachedProperty;
+        private readonly string _sessionId;
+
+        public SessionIdEnricher(string sessionId = null)
+        {
+            this._sessionId = sessionId ?? Guid.NewGuid().ToString("N");
+        }
 
         public void Enrich(LogEvent logEvent, ILogEventPropertyFactory propertyFactory)
         {
-            this._cachedProperty ??= propertyFactory.CreateProperty("SessionId",Guid.NewGuid().ToString("N"));
+            this._cachedProperty ??= propertyFactory.CreateProperty("SessionId",this._sessionId);
             logEvent.AddPropertyIfAbsent(this._cachedProperty);
         }
     }
diff --git a/nightly.serilog.xamarin/nightly.serilog.xamarin/EnrichersConfigurationExtensions.cs b/nightly.serilog.xamarin/nightly.serilog.xamarin/EnrichersConfigurationExtensions.cs
index bbd09f7..4a51b46 100644
--- a/nightly.serilog.xamarin/nightly.serilog.xamarin/EnrichersConfigurationExtensions.cs
+++ b/nightly.serilog.xamarin/nightly.serilog.xamarin/EnrichersConfigurationExtensions.cs
@@ -42,10 +42,10 @@ public static LoggerConfiguration WithDeviceId(this LoggerEnrichmentConfiguratio
         /// <param name="enrichment"></param>
         /// <returns></returns>
         /// <exception cref="ArgumentNullException"></exception>
-        public static LoggerConfiguration WithSessionId(this LoggerEnrichmentConfiguration enrichment)
+        public static LoggerConfiguration WithSessionId(this LoggerEnrichmentConfiguration enrichment, string sessionId = null)
         {
             if (enrichment == null) throw new ArgumentNullException(nameof(enrichment));
-            return enrichment.With<SessionIdEnricher>();
+            return enrichment.With(new SessionIdEnricher(sessionId));
         }
         
         /// <summary>