diff --git a/sdg-core/src/main/java/es/upv/mist/slicing/graphs/ExpressionObjectTreeFinder.java b/sdg-core/src/main/java/es/upv/mist/slicing/graphs/ExpressionObjectTreeFinder.java
index 3fb8c663d7b842b45fa0335ed8f742117dcfd877..f5b063d437479bf79ca5450e89b57f983fc14c26 100644
--- a/sdg-core/src/main/java/es/upv/mist/slicing/graphs/ExpressionObjectTreeFinder.java
+++ b/sdg-core/src/main/java/es/upv/mist/slicing/graphs/ExpressionObjectTreeFinder.java
@@ -222,16 +222,22 @@ public class ExpressionObjectTreeFinder {
             public void visit(ArrayInitializerExpr n, String arg) {}
 
             @Override
-            public void visit(BinaryExpr n, String arg) {}
+            public void visit(BinaryExpr n, String arg) {
+                super.visit(n, "");
+            }
 
             @Override
             public void visit(ClassExpr n, String arg) {}
 
             @Override
-            public void visit(InstanceOfExpr n, String arg) {}
+            public void visit(InstanceOfExpr n, String arg) {
+                super.visit(n, "");
+            }
 
             @Override
-            public void visit(UnaryExpr n, String arg) {}
+            public void visit(UnaryExpr n, String arg) {
+                super.visit(n, "");
+            }
 
             @Override
             public void visit(LambdaExpr n, String arg) {}