diff --git a/cv8/program.c b/cv8/program.c
index 828a2a7..0c8690a 100644
--- a/cv8/program.c
+++ b/cv8/program.c
@@ -89,7 +89,7 @@ int count_no_leaves(struct tree* node) {
         return 0;
     }
   }
-    return 1 + count_n_leaves(node->left) + count_n_leaves(node->right);
+    return 1 + count_no_leaves(node->left) + count_no_leaves(node->right);
 }
 
 void knowledge_system(struct tree* node) {