diff --git a/src/parser.rs b/src/parser.rs
index fc5373e..acf00e0 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -100,6 +100,7 @@ impl Entree {
 
     pub fn add_structure(&mut self, structure: Structure) -> i8 {
         self.inputs.push(structure);
+        self.size +=1;
         0
     }