diff --git a/src/main/java/parser/ASTBuilder.java b/src/main/java/parser/ASTBuilder.java
index 7e7422d..9d16758 100644
--- a/src/main/java/parser/ASTBuilder.java
+++ b/src/main/java/parser/ASTBuilder.java
@@ -252,11 +252,11 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitBooleanLiteral(SimpleJavaParser.BooleanLiteralContext ctx) {
-        return super.visitBooleanLiteral(ctx);
+        return (ASTNode) new BooleanLiteralNode(ctx.getText());
     }
 
     @Override
     public ASTNode visitCharLiteral(SimpleJavaParser.CharLiteralContext ctx) {
-        return super.visitCharLiteral(ctx);
+        return (ASTNode) new CharLiteralNode(ctx.getText());
     }
 }