diff --git a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/trace/DefaultTracer.java b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/trace/DefaultTracer.java
index 454956c3a..b4bb2821b 100644
--- a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/trace/DefaultTracer.java
+++ b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/trace/DefaultTracer.java
@@ -114,7 +114,7 @@ public class DefaultTracer implements Tracer {
 		final Span savedSpan = span.getSavedSpan();
 		if (!span.equals(cur)) {
 			ExceptionUtils.warn(
-					"Tried to close span but " + "it is not the current span: " + span
+					"Tried to close span but it is not the current span: " + span
 							+ ".  You may have forgotten to close or detach " + cur);
 		}
 		else {