diff --git a/runtime/src/test/scala/org/capnproto/LayoutSuite.scala b/runtime/src/test/scala/org/capnproto/LayoutSuite.scala
index cd922ed..3c07473 100644
--- a/runtime/src/test/scala/org/capnproto/LayoutSuite.scala
+++ b/runtime/src/test/scala/org/capnproto/LayoutSuite.scala
@@ -119,15 +119,12 @@ class LayoutSuite extends FunSuite {
   }
 
 
-  class BareStructBuilder(structSize : StructSize) extends StructBuilder.Factory[StructBuilder] {
+  class BareStructBuilder(val structSize : StructSize) extends StructBuilder.Factory[StructBuilder] {
 
     def constructBuilder(segment: org.capnproto.SegmentBuilder, data: Int, pointers: Int,
                           dataSize: Int, pointerCount: Short) : StructBuilder = {
       return new StructBuilder(segment,data,pointers,dataSize,pointerCount)
     }
-    def structSize() : StructSize = {
-      return structSize
-    }
   }
 
 
@@ -138,7 +135,7 @@ class LayoutSuite extends FunSuite {
     val segment = new SegmentBuilder(buffer, new BuilderArena(BuilderArena.SUGGESTED_FIRST_SEGMENT_WORDS,
                                                               BuilderArena.SUGGESTED_ALLOCATION_STRATEGY))
     val factory = new BareStructBuilder(new StructSize(2, 4))
-    val builder =  WireHelpers.initStructPointer(factory, 0, segment, factory.structSize())
+    val builder =  WireHelpers.initStructPointer(factory, 0, segment, factory.structSize)
     setupStruct(builder)
     checkStruct(builder)
   }