diff --git a/tracer/src/Datadog.Trace/Agent/Api.cs b/tracer/src/Datadog.Trace/Agent/Api.cs
index 56b2c5df8091..3928c413d624 100644
--- a/tracer/src/Datadog.Trace/Agent/Api.cs
+++ b/tracer/src/Datadog.Trace/Agent/Api.cs
@@ -208,7 +208,7 @@ private async Task<bool> SendTracesAsync(ArraySegment<byte> traces, int numberOf
                         tracer.AgentVersion = version ?? string.Empty;
                     }
 
-                    if (response.ContentLength != 0 && Tracer.Instance.Sampler != null)
+                    if (response.ContentLength != 0 && tracer.Sampler != null)
                     {
                         var responseContent = await response.ReadAsStringAsync().ConfigureAwait(false);