diff --git a/src/Elastic.OpenTelemetry/Processors/ElasticCompatibilityProcessor.cs b/src/Elastic.OpenTelemetry/Processors/ElasticCompatibilityProcessor.cs
index d48e53c..fd7f7b6 100644
--- a/src/Elastic.OpenTelemetry/Processors/ElasticCompatibilityProcessor.cs
+++ b/src/Elastic.OpenTelemetry/Processors/ElasticCompatibilityProcessor.cs
@@ -88,7 +88,7 @@ public override void OnEnd(Activity activity)
 				var target = urlPath;
 
 				if (urlQuery is not null)
-					target += $"?{urlQuery}";
+					target += urlQuery;
 
 				SetStringAttribute(HttpTarget, target);
 			}