diff --git a/DeltaExtractor/src/org/ntlab/deltaExtractor/DeltaExtractor.java b/DeltaExtractor/src/org/ntlab/deltaExtractor/DeltaExtractor.java
index 08cc21d..a192105 100644
--- a/DeltaExtractor/src/org/ntlab/deltaExtractor/DeltaExtractor.java
+++ b/DeltaExtractor/src/org/ntlab/deltaExtractor/DeltaExtractor.java
@@ -88,7 +88,7 @@
 		ArrayList<ObjectReference> fieldArrays = new ArrayList<ObjectReference>();
 		ArrayList<ObjectReference> fieldArrayElements = new ArrayList<ObjectReference>();
 		ObjectReference thisObj = new ObjectReference(thisObjectId, methodExecution.getThisClassName(), 
-				Trace.getDeclaringType(methodExecution.getSignature(), methodExecution.isConstractor()), Trace.getDeclaringType(methodExecution.getCallerSideSignature(), methodExecution.isConstractor()));
+				Trace.getDeclaringType(methodExecution.getSignature(), methodExecution.isConstructor()), Trace.getDeclaringType(methodExecution.getCallerSideSignature(), methodExecution.isConstructor()));
 		
 		if (childMethodExecution == null) {
 			// �T���J�n���͈�U�폜���A�Ăяo�����̒T���𑱂���ۂɕ���������
@@ -105,7 +105,7 @@
 			}
 		}
 		
-		if (childMethodExecution != null && childMethodExecution.isConstractor()) {
+		if (childMethodExecution != null && childMethodExecution.isConstructor()) {
 			// �Ăяo���悪�R���X�g���N�^�������ꍇ
 			int newIndex = objList.indexOf(childMethodExecution.getThisObjId());
 			if (newIndex != -1) {
@@ -197,7 +197,7 @@
 						if (retIndex != -1) {
 							// �߂�l���R��������
 							prevChildMethodExecution.setAugmentation(new DeltaAugmentationInfo());
-							if (prevChildMethodExecution.isConstractor()) {
+							if (prevChildMethodExecution.isConstructor()) {
 								// �ǐՑΏۂ�constractor���Ă�ł�����(�I�u�W�F�N�g�̐�����������)field�Ɠ��l�ɏ���
 								String newObjId = ret.getId();
 								creationList.add(newObjId);
@@ -490,8 +490,8 @@
 		ArrayList<ObjectReference> fieldArrays = new ArrayList<ObjectReference>();
 		ArrayList<ObjectReference> fieldArrayElements = new ArrayList<ObjectReference>();
 		ObjectReference thisObj = new ObjectReference(thisObjectId, methodExecution.getThisClassName(), 
-				Trace.getDeclaringType(methodExecution.getSignature(), methodExecution.isConstractor()), 
-				Trace.getDeclaringType(methodExecution.getCallerSideSignature(), methodExecution.isConstractor()));
+				Trace.getDeclaringType(methodExecution.getSignature(), methodExecution.isConstructor()), 
+				Trace.getDeclaringType(methodExecution.getCallerSideSignature(), methodExecution.isConstructor()));
 		
 		((DeltaAugmentationInfo)methodExecution.getAugmentation()).setSetterSide(false);		// ��{�I��getter�Ăяo���̂͂������A����
 		ArrayList<ObjectReference> argments = methodExecution.getArguments();
@@ -583,7 +583,7 @@
 						TracePoint childTracePoint = tracePoint.duplicate();
 						childTracePoint.stepBackNoReturn();
 						calleeSearch(trace, childTracePoint, objList, childMethodExecution.isStatic(), index);		// �Ăяo���������ɒT��	
-						if (childMethodExecution.isConstractor()) {
+						if (childMethodExecution.isConstructor()) {
 							// �R���X�g���N�^�Ăяo���������ꍇ
 							if (objectId.equals(srcObject.getId())) {
 								r = new Reference(thisObj, srcObject);
@@ -828,7 +828,7 @@
 		objList.add(thisObjectId);
 		objList.add(argObj.getId());
 		srcObject = new ObjectReference(thisObjectId, methodExecution.getThisClassName(), 
-				Trace.getDeclaringType(methodExecution.getSignature(), methodExecution.isConstractor()), Trace.getDeclaringType(methodExecution.getCallerSideSignature(), methodExecution.isConstractor()));
+				Trace.getDeclaringType(methodExecution.getSignature(), methodExecution.isConstructor()), Trace.getDeclaringType(methodExecution.getCallerSideSignature(), methodExecution.isConstructor()));
 		dstObject = argObj;
 if (DEBUG1) {
 		System.out.println("extract delta of:" + methodExecution.getSignature() + " -> " + argObj.getActualType()  + "(" + argObj.getId() + ")");