diff --git a/src/main/java/br/unb/cic/analysis/model/Conflict.java b/src/main/java/br/unb/cic/analysis/model/Conflict.java
index 36e2fdf4..fcedbbcf 100644
--- a/src/main/java/br/unb/cic/analysis/model/Conflict.java
+++ b/src/main/java/br/unb/cic/analysis/model/Conflict.java
@@ -20,6 +20,7 @@ public class Conflict {
     protected String sinkMethodName;
     protected Integer sinkLineNumber;
     protected Unit sinkUnit;
+    // used when using stack trace of the conflict.
     protected List<TraversedLine> sinkTraversedLine;
 
 
diff --git a/src/main/java/br/unb/cic/analysis/model/TraversedLine.java b/src/main/java/br/unb/cic/analysis/model/TraversedLine.java
index 9088dc0f..d86d54b6 100644
--- a/src/main/java/br/unb/cic/analysis/model/TraversedLine.java
+++ b/src/main/java/br/unb/cic/analysis/model/TraversedLine.java
@@ -4,9 +4,9 @@
 import soot.SootMethod;
 
 public class TraversedLine {
-    protected SootClass sootClass;
-    protected SootMethod sootMethod;
-    protected Integer lineNumber;
+    private SootClass sootClass;
+    private SootMethod sootMethod;
+    private Integer lineNumber;
 
     public TraversedLine(SootClass sootClass, SootMethod sootMethod, Integer lineNumber) {
         this.sootClass = sootClass;