diff --git a/tree.c b/tree.c
--- a/tree.c
+++ b/tree.c
@@ -19,8 +19,11 @@
 T *make_list (int elements, int rand_max)
 {
     int i;
+
     T *t;
+
     T *actual;
+
     T *first = NULL;
 
     srand (time (NULL));