diff --git a/spring-integration-core/src/main/java/org/springframework/integration/gateway/GatewayMethodMetadata.java b/spring-integration-core/src/main/java/org/springframework/integration/gateway/GatewayMethodMetadata.java
index ee92b8da72..69aab473ee 100644
--- a/spring-integration-core/src/main/java/org/springframework/integration/gateway/GatewayMethodMetadata.java
+++ b/spring-integration-core/src/main/java/org/springframework/integration/gateway/GatewayMethodMetadata.java
@@ -58,7 +58,6 @@ public class GatewayMethodMetadata {
 		this.payloadExpression = payloadExpression;
 	}
 
-	@Nullable
 	public Map<String, Expression> getHeaderExpressions() {
 		return this.headerExpressions;
 	}