diff --git a/org.ntlab.reverseDebugger/src/org/ntlab/reversedebugger/CallStackLabelProvider.java b/org.ntlab.reverseDebugger/src/org/ntlab/reversedebugger/CallStackLabelProvider.java
index ce4190e..de53070 100644
--- a/org.ntlab.reverseDebugger/src/org/ntlab/reversedebugger/CallStackLabelProvider.java
+++ b/org.ntlab.reverseDebugger/src/org/ntlab/reversedebugger/CallStackLabelProvider.java
@@ -16,29 +16,27 @@
 import com.sun.jdi.ThreadReference;
 
 public class CallStackLabelProvider extends LabelProvider {
-
+	
 	@Override
 	public String getText(Object element) {
 		if (element instanceof TreeNode) {
 			Object value = ((TreeNode)element).getValue();
 			if (value instanceof MethodCaller) {
 				MethodCaller mc = (MethodCaller)value;
-				ObjectReference obj = mc.getObj();
-				try {
-					if (obj instanceof ThreadReference) {
-						return "ThreadID: " + mc.getThreadId();
-					} else if (obj != null) {
-						return ((StringReference)mc.callInstanceMethod("getSignature")).value();
-					}					
-				} catch (InvalidTypeException | ClassNotLoadedException 
-						| InvocationException | IncompatibleThreadStateException e) {
-					e.printStackTrace();
-				}
+				return "ThreadID: " + mc.getThreadId();
+			}
+			if (value instanceof CallStackModel) {
+				CallStackModel callStackModel = (CallStackModel)value;
+				StringBuilder text = new StringBuilder();
+				text.append(callStackModel.getSignature());
+				text.append(" line: ");
+				text.append(callStackModel.getCallLineNo());
+				return text.toString();
 			}
 		}
 		return "";
 	}
-	
+
 	@Override
 	public Image getImage(Object element) {
 		if (element instanceof TreeNode) {