--- old/src/java.base/share/classes/java/lang/invoke/MethodHandles.java	2014-12-09 02:31:33.000000000 +0300
+++ new/src/java.base/share/classes/java/lang/invoke/MethodHandles.java	2014-12-09 02:31:33.000000000 +0300
@@ -2028,7 +2028,7 @@
         MethodType oldType = target.type();
         if (oldType == newType)  return target;
         if (oldType.explicitCastEquivalentToAsType(newType)) {
-            return target.asType(newType);
+            return target.asFixedArity().asType(newType);
         }
         return MethodHandleImpl.makePairwiseConvert(target, newType, false);
     }