diff --git a/cffu-core/src/main/java/io/foldright/cffu/CffuFactory.java b/cffu-core/src/main/java/io/foldright/cffu/CffuFactory.java
index 78057b19..741d2734 100644
--- a/cffu-core/src/main/java/io/foldright/cffu/CffuFactory.java
+++ b/cffu-core/src/main/java/io/foldright/cffu/CffuFactory.java
@@ -153,7 +153,7 @@ public <T> CompletionStage<T> failedStage(Throwable ex) {
      * a completed Cffu with the value {@code null}
      */
     @Contract(pure = true)
-    private <T> Cffu<T> dummy() {
+    private Cffu<Void> dummy() {
         return completedFuture(null);
     }