1 files changed, 1 insertions, 1 deletions
diff --git a/sonar-duplications/src/main/java/org/sonar/duplications/index/ClonePart.java b/sonar-duplications/src/main/java/org/sonar/duplications/index/ClonePart.java
index 6a569e27eae..630f52c1350 100644
--- a/sonar-duplications/src/main/java/org/sonar/duplications/index/ClonePart.java
+++ b/sonar-duplications/src/main/java/org/sonar/duplications/index/ClonePart.java
@@ -64,7 +64,7 @@ public class ClonePart implements CodeFragment {
 
   @Override
   public boolean equals(Object obj) {
-    if (obj instanceof ClonePart) {
+    if (this.getClass() == obj.getClass()) {
       ClonePart another = (ClonePart) obj;
       return another.resourceId.equals(resourceId)
         && another.startLine == startLine