diff --git a/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java b/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java
index c850afe..242797f 100644
--- a/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java
+++ b/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java
@@ -97,8 +97,8 @@
 				removeList.add(thisObjectId);		// ��ň�U�AthisObject ����菜��
 				if (!thisObjectId.equals(childMethodExecution.getThisObjId())) {
 					// �Ăяo���悪�R���X�g���N�^�ŁA�I�u�W�F�N�g�ԌĂяo���̎���3�i��1�A��2�̋t�j
-//					aliasList.put(childMethodExecution.getThisObjId(), new Alias(Alias.AliasType.RECEIVER, 0, childMethodExecution.getThisObjId(), tracePoint.duplicate()));
-					aliasList.put(childMethodExecution.getThisObjId(), new Alias(Alias.AliasType.CONSTRACTOR_INVOCATION, 0, childMethodExecution.getThisObjId(), tracePoint.duplicate()));
+					aliasList.put(childMethodExecution.getThisObjId(), new Alias(Alias.AliasType.RECEIVER, 0, childMethodExecution.getThisObjId(), tracePoint.duplicate()));
+//					aliasList.put(childMethodExecution.getThisObjId(), new Alias(Alias.AliasType.CONSTRACTOR_INVOCATION, 0, childMethodExecution.getThisObjId(), tracePoint.duplicate()));
 				}
 			}
 		}
diff --git a/src/org/ntlab/deltaViewer/MagnetRONViewer.java b/src/org/ntlab/deltaViewer/MagnetRONViewer.java
index 83573ef..82d2d79 100644
--- a/src/org/ntlab/deltaViewer/MagnetRONViewer.java
+++ b/src/org/ntlab/deltaViewer/MagnetRONViewer.java
@@ -135,6 +135,7 @@
 				update();
 				break;
 			case CONSTRACTOR_INVOCATION:
+				// TODO When called after RECEIVER.
 				createObjectVertexOnConstractor(alias);
 				createMethodExecutionVertex(alias.getObjectId(), ((MethodInvocation)alias.getOccurrencePoint().getStatement()).getCallerSideMethodName(), ((MethodInvocation)alias.getOccurrencePoint().getStatement()).getCalledMethodExecution());
 				update();