diff --git a/compiler/src/main/cpp/capnpc-java.c++ b/compiler/src/main/cpp/capnpc-java.c++
index c8e6bdd..4aba126 100644
--- a/compiler/src/main/cpp/capnpc-java.c++
+++ b/compiler/src/main/cpp/capnpc-java.c++
@@ -338,18 +338,22 @@ private:
       if (liteMode) {
         return kj::strTree("org.capnproto.Capability.", suffix);
       }
+      auto interfaceSuffix = kj::str(suffix);
+      if(suffix == kj::str("Builder") || suffix == kj::str("Reader")) {
+        interfaceSuffix = kj::str("Client");
+      }
       auto interfaceSchema = type.asInterface();
       if (interfaceSchema.getProto().getIsGeneric()) {
         auto typeArgs = getTypeArguments(interfaceSchema, interfaceSchema, kj::str(suffix));
         return kj::strTree(
-          javaFullName(interfaceSchema), ".", suffix, "<",
+          javaFullName(interfaceSchema), ".", interfaceSuffix, "<",
           kj::StringTree(KJ_MAP(arg, typeArgs){
               return kj::strTree(arg);
             }, ", "),
           ">"
           );
       } else {
-        return kj::strTree(javaFullName(type.asInterface()), ".", suffix);
+        return kj::strTree(javaFullName(type.asInterface()), ".", interfaceSuffix);
       }
     }
     case schema::Type::LIST:
diff --git a/runtime/src/main/java/org/capnproto/Capability.java b/runtime/src/main/java/org/capnproto/Capability.java
index 4521c54..30eb6cf 100644
--- a/runtime/src/main/java/org/capnproto/Capability.java
+++ b/runtime/src/main/java/org/capnproto/Capability.java
@@ -11,8 +11,7 @@ import static org.capnproto.ClientHook.NULL_CAPABILITY_BRAND;
 public final class Capability {
 
     public static abstract class Factory<T extends ClientBase>
-            implements FromPointerReader<T>,
-                       FromPointerBuilder<T>,
+            implements PointerFactory<T, T>,
                        SetPointerBuilder<T, T> {
 
         public abstract T newClient(ClientHook hook);