diff --git a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTag.java b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTag.java
index e1053b0be..9da85d1f4 100644
--- a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTag.java
+++ b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTag.java
@@ -45,6 +45,7 @@ public @interface SpanTag {
 	/**
 	 * The name of the key of the tag which should be created.
 	 */
+	@AliasFor("key")
 	String value() default "";
 
 	/**