diff --git a/cv7/program.c b/cv7/program.c
index 9b3f929..3c7eabe 100644
--- a/cv7/program.c
+++ b/cv7/program.c
@@ -42,6 +42,13 @@ struct tree* load_tree() {
             destroy_tree(node);
             return NULL;
         }
+    } else {  
+        struct tree* extra = read_tree(); 
+        if (extra) {
+            free(extra); 
+            destroy_tree(node);
+            return NULL;
+        }
     }
 
     return node;
@@ -49,6 +56,7 @@ struct tree* load_tree() {
 
 
 
+
 void run_tree(struct tree* tree) {
     if (!tree) {
         return;
@@ -115,3 +123,4 @@ int main() {
     return 0;
 }
 
+