diff --git a/Src/Common/W3C/W3CActivityExtensions.cs b/Src/Common/W3C/W3CActivityExtensions.cs
index 580b211c2..76ba3c46a 100644
--- a/Src/Common/W3C/W3CActivityExtensions.cs
+++ b/Src/Common/W3C/W3CActivityExtensions.cs
@@ -155,7 +155,7 @@ public static void SetTraceparent(this Activity activity, string value)
         [Obsolete("Not ready for public consumption.")]
         [EditorBrowsable(EditorBrowsableState.Never)]
         public static string GetTracestate(this Activity activity) =>
-            activity.Tags.FirstOrDefault(t => t.Key == W3CConstants.TraceStateTag).Value;
+            activity.Tags.FirstOrDefault(t => t.Key == W3CConstants.TracestateTag).Value;
 
         /// <summary>
         /// Sets tracestate header value on the Activity.
@@ -165,7 +165,7 @@ public static string GetTracestate(this Activity activity) =>
         [Obsolete("Not ready for public consumption.")]
         [EditorBrowsable(EditorBrowsableState.Never)]
         public static void SetTraceState(this Activity activity, string value) =>
-            activity.AddTag(W3CConstants.TraceStateTag, value);
+            activity.AddTag(W3CConstants.TracestateTag, value);
 
         /// <summary>
         /// Gets TraceId from the Activity.
@@ -241,7 +241,7 @@ private static Activity UpdateContextFromParent(this Activity activity)
                             case W3CConstants.SampledTag:
                                 activity.SetSampled(tag.Value);
                                 break;
-                            case W3CConstants.TraceStateTag:
+                            case W3CConstants.TracestateTag:
                                 activity.SetTraceState(tag.Value);
                                 break;
                         }
diff --git a/Src/Common/W3C/W3CConstants.cs b/Src/Common/W3C/W3CConstants.cs
index 0b7ee8059..66583e5c6 100644
--- a/Src/Common/W3C/W3CConstants.cs
+++ b/Src/Common/W3C/W3CConstants.cs
@@ -56,9 +56,9 @@ static class W3CConstants
         internal const string SampledTag = "w3c_sampled";
 
         /// <summary>
-        /// TraceState tag name.
+        /// Tracestate tag name.
         /// </summary>
-        internal const string TraceStateTag = "w3c_traceState";
+        internal const string TracestateTag = "w3c_tracestate";
 
         /// <summary>
         /// Default version value.
diff --git a/Src/Common/W3C/W3COperationCorrelationTelemetryInitializer.cs b/Src/Common/W3C/W3COperationCorrelationTelemetryInitializer.cs
index 3293eafbb..615fa48db 100644
--- a/Src/Common/W3C/W3COperationCorrelationTelemetryInitializer.cs
+++ b/Src/Common/W3C/W3COperationCorrelationTelemetryInitializer.cs
@@ -84,10 +84,10 @@ internal static void UpdateTelemetry(ITelemetry telemetry, Activity activity, bo
                     case W3CConstants.ParentSpanIdTag:
                         parentSpanId = tag.Value;
                         break;
-                    case W3CConstants.TraceStateTag:
+                    case W3CConstants.TracestateTag:
                         if (telemetry is OperationTelemetry operation)
                         {
-                            operation.Properties[W3CConstants.TraceStateTag] = tag.Value;
+                            operation.Properties[W3CConstants.TracestateTag] = tag.Value;
                         }
 
                         break;
@@ -121,4 +121,4 @@ internal static void UpdateTelemetry(ITelemetry telemetry, Activity activity, bo
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Src/DependencyCollector/Net45.Tests/DependencyTrackingTelemetryModuleHttpTest.cs b/Src/DependencyCollector/Net45.Tests/DependencyTrackingTelemetryModuleHttpTest.cs
index 0408e42f2..a79aa8b85 100644
--- a/Src/DependencyCollector/Net45.Tests/DependencyTrackingTelemetryModuleHttpTest.cs
+++ b/Src/DependencyCollector/Net45.Tests/DependencyTrackingTelemetryModuleHttpTest.cs
@@ -362,7 +362,7 @@ public void TestDependencyCollectionWithW3CHeadersDiagnosticSource()
 
                 Assert.AreEqual("k=v", request.Headers[RequestResponseHeaders.CorrelationContextHeader]);
                 Assert.AreEqual("v", dependency.Properties["k"]);
-                Assert.AreEqual("state=some", dependency.Properties[W3CConstants.TraceStateTag]);
+                Assert.AreEqual("state=some", dependency.Properties[W3CConstants.TracestateTag]);
 
                 Assert.IsTrue(dependency.Properties.ContainsKey(W3CConstants.LegacyRequestIdProperty));
                 Assert.IsTrue(dependency.Properties[W3CConstants.LegacyRequestIdProperty].StartsWith("|guid."));
diff --git a/Src/DependencyCollector/NetCore.Tests/DependencyTrackingTelemetryModuleTestNetCore.cs b/Src/DependencyCollector/NetCore.Tests/DependencyTrackingTelemetryModuleTestNetCore.cs
index 27a6221bc..e93a5bc8c 100644
--- a/Src/DependencyCollector/NetCore.Tests/DependencyTrackingTelemetryModuleTestNetCore.cs
+++ b/Src/DependencyCollector/NetCore.Tests/DependencyTrackingTelemetryModuleTestNetCore.cs
@@ -261,7 +261,7 @@ public async Task TestDependencyCollectionWithW3CHeadersAndRequestId()
                 Assert.AreEqual("k=v", request.Headers.GetValues(RequestResponseHeaders.CorrelationContextHeader).Single());
 
                 Assert.AreEqual("v", dependency.Properties["k"]);
-                Assert.AreEqual("state=some", dependency.Properties[W3CConstants.TraceStateTag]);
+                Assert.AreEqual("state=some", dependency.Properties[W3CConstants.TracestateTag]);
 
                 Assert.IsTrue(dependency.Properties.ContainsKey(W3CConstants.LegacyRequestIdProperty));
                 Assert.IsTrue(dependency.Properties[W3CConstants.LegacyRequestIdProperty].StartsWith("|guid."));
diff --git a/Src/DependencyCollector/Shared.Tests/Implementation/ProfilerHttpProcessingTest.cs b/Src/DependencyCollector/Shared.Tests/Implementation/ProfilerHttpProcessingTest.cs
index be501a622..0a17f5835 100644
--- a/Src/DependencyCollector/Shared.Tests/Implementation/ProfilerHttpProcessingTest.cs
+++ b/Src/DependencyCollector/Shared.Tests/Implementation/ProfilerHttpProcessingTest.cs
@@ -308,7 +308,7 @@ public void RddTestHttpProcessingProfilerOnBeginAddsW3CHeadersWhenEnabled()
             using (var op = client.StartOperation<RequestTelemetry>("request"))
             {
                 Activity.Current.AddBaggage("k", "v");
-                Activity.Current.AddTag(W3CConstants.TraceStateTag, "some=state");
+                Activity.Current.AddTag(W3CConstants.TracestateTag, "some=state");
                 httpProcessingW3C.OnBeginForGetResponse(request);
 
                 Assert.AreEqual("k=v", request.Headers[RequestResponseHeaders.CorrelationContextHeader]);
diff --git a/Src/DependencyCollector/Shared.Tests/W3C/W3COperationCorrelationTelemetryInitializerTests.cs b/Src/DependencyCollector/Shared.Tests/W3C/W3COperationCorrelationTelemetryInitializerTests.cs
index fdeea6dec..1ee4936a4 100644
--- a/Src/DependencyCollector/Shared.Tests/W3C/W3COperationCorrelationTelemetryInitializerTests.cs
+++ b/Src/DependencyCollector/Shared.Tests/W3C/W3COperationCorrelationTelemetryInitializerTests.cs
@@ -178,8 +178,8 @@ public void InitializerPopulatesTraceStateOnRequestAndDependencyTelemetry()
             Assert.AreEqual(expectedTrace, request.Context.Operation.Id);
             Assert.AreEqual($"|{expectedTrace}.{expectedSpanId}.", request.Id);
 
-            Assert.AreEqual("key=value", request.Properties[W3CConstants.TraceStateTag]);
-            Assert.AreEqual("key=value", dependency.Properties[W3CConstants.TraceStateTag]);
+            Assert.AreEqual("key=value", request.Properties[W3CConstants.TracestateTag]);
+            Assert.AreEqual("key=value", dependency.Properties[W3CConstants.TracestateTag]);
             Assert.IsFalse(trace.Properties.Any());
         }
 
diff --git a/Src/Web/Web.Net45.Tests/RequestTrackingTelemetryModuleTest.Net45.cs b/Src/Web/Web.Net45.Tests/RequestTrackingTelemetryModuleTest.Net45.cs
index a494074d0..c15613819 100644
--- a/Src/Web/Web.Net45.Tests/RequestTrackingTelemetryModuleTest.Net45.cs
+++ b/Src/Web/Web.Net45.Tests/RequestTrackingTelemetryModuleTest.Net45.cs
@@ -435,7 +435,7 @@ private void TestRequestTrackingWithW3CSupportEnabled(bool startActivity, bool a
             Assert.Equal("4bf92f3577b34da6a3ce929d0e0e4736", requestTelemetry.Context.Operation.Id);
             Assert.Equal("|4bf92f3577b34da6a3ce929d0e0e4736.00f067aa0ba902b7.", requestTelemetry.Context.Operation.ParentId);
 
-            Assert.Equal("state=some", requestTelemetry.Properties[W3CConstants.TraceStateTag]);
+            Assert.Equal("state=some", requestTelemetry.Properties[W3CConstants.TracestateTag]);
         }
 
         private void TestRequestTrackingWithW3CSupportEnabledAndNoW3CHeaders(bool startActivity, bool addRequestId)