functionaljava
diff --git a/‎core/src/main/java/fj/data/Validation.java‎
Lines changed: 10 additions & 16 deletions b/‎core/src/main/java/fj/data/Validation.java‎
Lines changed: 10 additions & 16 deletions
@@ -738,20 +738,14 @@ public final <B> Validation<List<E>, B> accumulate(F<T, B> f) {
     }
 
 
-    public final <B, C> Validation<List<E>, C> accumulate(Validation<E, B> v2, F2<T, B, C> f) {
-        List<E> list = List.nil();
-        if (isFail()) {
-            list = list.cons(fail());
-        }
-        if (v2.isFail()) {
-            list = list.cons(v2.fail());
-        }
-        if (!list.isEmpty()) {
-            return fail(list);
-        } else {
-            return success(f.f(success(), v2.success()));
-        }
+  public final <B, C> Validation<List<E>, C> accumulate(Validation<E, B> v2, F2<T, B, C> f) {
+    List<E> list = fails(list(this, v2));
+    if (!list.isEmpty()) {
+      return fail(list);
+    } else {
+      return success(f.f(success(), v2.success()));
     }
+  }
 
 
 
@@ -784,7 +778,7 @@ public final <B, C, D> Validation<List<E>, D> accumulate(Validation<E, B> v2, Va
 
 
     public final <B, C, D, $E, $F, G> Validation<List<E>, G> accumulate(Validation<E, B> v2, Validation<E, C> v3, Validation<E, D> v4, Validation<E, $E> v5, Validation<E, $F> v6, F6<T, B, C, D, $E, $F, G> f) {
-        List<E> list = fails(list(this, v2, v3, v4, v5));
+        List<E> list = fails(list(this, v2, v3, v4, v5, v6));
         if (!list.isEmpty()) {
             return fail(list);
         } else {
@@ -793,7 +787,7 @@ public final <B, C, D> Validation<List<E>, D> accumulate(Validation<E, B> v2, Va
     }
 
     public final <B, C, D, $E, $F, G, H> Validation<List<E>, H> accumulate(Validation<E, B> v2, Validation<E, C> v3, Validation<E, D> v4, Validation<E, $E> v5, Validation<E, $F> v6, Validation<E, G> v7, F7<T, B, C, D, $E, $F, G, H> f) {
-        List<E> list = fails(list(this, v2, v3, v4, v5));
+        List<E> list = fails(list(this, v2, v3, v4, v5, v6, v7));
         if (!list.isEmpty()) {
             return fail(list);
         } else {
@@ -802,7 +796,7 @@ public final <B, C, D> Validation<List<E>, D> accumulate(Validation<E, B> v2, Va
     }
 
     public final <B, C, D, $E, $F, G, H, I> Validation<List<E>, I> accumulate(Validation<E, B> v2, Validation<E, C> v3, Validation<E, D> v4, Validation<E, $E> v5, Validation<E, $F> v6, Validation<E, G> v7, Validation<E, H> v8, F8<T, B, C, D, $E, $F, G, H, I> f) {
-        List<E> list = fails(list(this, v2, v3, v4, v5));
+        List<E> list = fails(list(this, v2, v3, v4, v5, v6, v7, v8));
         if (!list.isEmpty()) {
             return fail(list);
         } else {