diff --git a/src/main/java/net/openhft/chronicle/java8/Function.java b/src/main/java/net/openhft/chronicle/java8/Function.java
index 9cb4e1ca4..3d680e259 100644
--- a/src/main/java/net/openhft/chronicle/java8/Function.java
+++ b/src/main/java/net/openhft/chronicle/java8/Function.java
@@ -12,7 +12,7 @@ import java.io.Serializable;
  * @param <R> the type of the result of the function
  * @since 1.8
  */
-@FunctionalInterface
+
 public interface Function<T, R> extends Serializable {
 
     /**