diff --git a/spring-cloud-sleuth.html b/spring-cloud-sleuth.html
index 055b219bc..89062e3c0 100644
--- a/spring-cloud-sleuth.html
+++ b/spring-cloud-sleuth.html
@@ -1925,7 +1925,7 @@ static class CustomHttpSpanInjector implements HttpSpanInjector {
 
 	@Override
 	public void inject(Span span, SpanTextMap carrier) {
-		carrier.put("correlationId", Span.idToHex(span.getTraceId()));
+		carrier.put("correlationId", span.traceIdString());
 		carrier.put("mySpanId", Span.idToHex(span.getSpanId()));
 	}
 }</code></pre>
@@ -1958,7 +1958,7 @@ that injects the headers into the Http Response and a Servlet filter which makes
 	@Override
 	public void inject(Span span, SpanTextMap carrier) {
 		super.inject(span, carrier);
-		carrier.put(Span.TRACE_ID_NAME, Span.idToHex(span.getTraceId()));
+		carrier.put(Span.TRACE_ID_NAME, span.traceIdString());
 		carrier.put(Span.SPAN_ID_NAME, Span.idToHex(span.getSpanId()));
 	}
 }