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 9da85d1f4..e1053b0be 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
@@ -45,7 +45,6 @@ public @interface SpanTag {
 	/**
 	 * The name of the key of the tag which should be created.
 	 */
-	@AliasFor("key")
 	String value() default "";
 
 	/**
diff --git a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTagAnnotationHandler.java b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTagAnnotationHandler.java
index e176eb106..9689045db 100644
--- a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTagAnnotationHandler.java
+++ b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/annotation/SpanTagAnnotationHandler.java
@@ -121,10 +121,16 @@ class SpanTagAnnotationHandler {
 	private void addAnnotatedArguments(List<SleuthAnnotatedParameter> toBeAdded) {
 		for (SleuthAnnotatedParameter container : toBeAdded) {
 			String tagValue = resolveTagValue(container.annotation, container.argument);
-			tracer().addTag(container.annotation.value(), tagValue);
+			String tagKey = resolveTagKey(container);
+			tracer().addTag(tagKey, tagValue);
 		}
 	}
 
+	private String resolveTagKey(SleuthAnnotatedParameter container) {
+		return StringUtils.hasText(container.annotation.value()) ?
+				container.annotation.value() : container.annotation.key();
+	}
+
 	String resolveTagValue(SpanTag annotation, Object argument) {
 		if (argument == null) {
 			return "";
diff --git a/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/annotation/SleuthSpanCreatorAspectTests.java b/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/annotation/SleuthSpanCreatorAspectTests.java
index a5a76c4ad..537e5a192 100644
--- a/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/annotation/SleuthSpanCreatorAspectTests.java
+++ b/spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/annotation/SleuthSpanCreatorAspectTests.java
@@ -149,6 +149,22 @@ public class SleuthSpanCreatorAspectTests {
 		then(ExceptionUtils.getLastException()).isNull();
 	}
 
+	@Test
+	public void shouldContinueSpanWhenKeyIsUsedOnSpanTagWhenAnnotationOnInterfaceMethod() {
+		Span span = this.tracer.createSpan("foo");
+
+		this.testBean.testMethod10_v2("test");
+
+		this.tracer.close(span);
+		List<Span> spans = new ArrayList<>(this.accumulator.getSpans());
+		then(new ListOfSpans(spans)).hasSize(1)
+				.hasASpanWithName("foo")
+				.hasASpanWithTagEqualTo("customTestTag10", "test")
+				.hasASpanWithLogEqualTo("customTest.before")
+				.hasASpanWithLogEqualTo("customTest.after");
+		then(ExceptionUtils.getLastException()).isNull();
+	}
+
 	@Test
 	public void shouldContinueSpanWithLogWhenAnnotationOnClassMethod() {
 		Span span = this.tracer.createSpan("foo");
@@ -244,7 +260,10 @@ public class SleuthSpanCreatorAspectTests {
 		void testMethod9(String param);
 
 		@ContinueSpan(log = "customTest")
-		void testMethod10(@SpanTag("testTag10") String param);
+		void testMethod10(@SpanTag(value = "testTag10") String param);
+
+		@ContinueSpan(log = "customTest")
+		void testMethod10_v2(@SpanTag(key = "testTag10") String param);
 
 		// tag::continue_span[]
 		@ContinueSpan(log = "testMethod11")
@@ -306,7 +325,12 @@ public class SleuthSpanCreatorAspectTests {
 		}
 
 		@Override
-		public void testMethod10(@SpanTag("customTestTag10") String param) {
+		public void testMethod10(@SpanTag(value = "customTestTag10") String param) {
+
+		}
+
+		@Override
+		public void testMethod10_v2(@SpanTag(key = "customTestTag10") String param) {
 
 		}