diff --git a/README.adoc b/README.adoc
index b0b7bd32a..452eeb5f6 100644
--- a/README.adoc
+++ b/README.adoc
@@ -324,6 +324,7 @@ Example of setting baggage on a span:
 ----
 Span initialSpan = this.tracer.createSpan("span");
 initialSpan.setBaggageItem("foo", "bar");
+initialSpan.setBaggageItem("UPPER_CASE", "someValue");
 ----
 
 ===== Baggage vs. Span Tags