diff --git a/src/main/java/TP1/TurtleAST.java b/src/main/java/TP1/TurtleAST.java
index 6d0f0c3..40b016b 100644
--- a/src/main/java/TP1/TurtleAST.java
+++ b/src/main/java/TP1/TurtleAST.java
@@ -71,6 +71,6 @@ public class TurtleAST {
     }
 
     public String toString(){
-        this.ntriple.toString();
+        return this.ntriple.toString();
     }
 }