diff --git a/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfigurationTests.java b/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfigurationTests.java
index 11126eb2c..1a06c5bb2 100644
--- a/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfigurationTests.java
+++ b/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfigurationTests.java
@@ -89,11 +89,13 @@ public class TraceWebAsyncClientAutoConfigurationTests {
 			initialSpan.finish();
 		}
 
-		then(this.accumulator
-				.getSpans().stream().filter(span -> Span.Kind.CLIENT == span.kind())
-				.findFirst().get()).matches(
-						span -> span.duration() >= TimeUnit.MILLISECONDS.toMicros(100));
-		then(this.tracer.tracer().currentSpan()).isNull();
+		Awaitility.await().untilAsserted(() -> {
+			then(this.accumulator
+					.getSpans().stream().filter(span -> Span.Kind.CLIENT == span.kind())
+					.findFirst().get()).matches(
+					span -> span.duration() >= TimeUnit.MILLISECONDS.toMicros(100));
+			then(this.tracer.tracer().currentSpan()).isNull();
+		});
 	}
 
 	@Test