diff --git a/tree_alloc.c b/tree_alloc.c
index 427cad0..b528687 100644
--- a/tree_alloc.c
+++ b/tree_alloc.c
@@ -7,12 +7,13 @@
 #ifdef DEBUG
 #include <stdio.h>
 
-void debug_print_tree(int indent, TreeAlloc *node) {
+void debug_print_tree(int indent, void *p) {
+  TreeAlloc *node = (TreeAlloc*) p;
   if (node != NULL) {
     debug_print_tree(indent + 1, node->left);
     for (int ii = 0; ii < indent; ii++) { printf("  "); }
     if (node->color == COLOR_RED) { printf("\e[31"); }
-    printf("%p %u\n", node, node->size);
+    printf("%p %lu\n", node, node->size);
     if (node->color == COLOR_RED) { printf("\e[37"); }
     debug_print_tree(indent + 1, node->right);
   }
@@ -306,6 +307,7 @@ int add_new_region(Arena *arena, uintptr_t size, uintptr_t padding, uintptr_t al
     newreg->right = NULL;
     realsize -= (void*) newreg - (void*) reg;
     realsize -= realsize % alignof(WatermarkAlloc);
+    newreg->size = realsize;
     if (arena->root_freespace == NULL) {
       insert_singleton((TreeAlloc**) &arena->root_freespace, (TreeAlloc*) newreg);
     } else {
@@ -319,6 +321,14 @@ int add_new_region(Arena *arena, uintptr_t size, uintptr_t padding, uintptr_t al
 }
 
 void unalloc(Arena *arena, void *addr) {
+#ifdef DEBUG
+  printf("==== UNALLOCATING ====\n");
+  printf("=== FREESPACE TREE ===\n");
+  debug_print_tree(0, arena->root_freespace);
+  printf("=== TREEALLOC TREE ===\n");
+  debug_print_tree(0, arena->root_treealloc);
+  printf("=== END OF TREES ====\n");
+#endif
   if (arena->root_treealloc == NULL) {
     arena->error("attempt to unallocate when there are no allocations!");
     return;
@@ -371,10 +381,12 @@ void unalloc(Arena *arena, void *addr) {
 void *alloc(Arena *arena, uintptr_t size, uintptr_t align) {
   uintptr_t actual_align = lcm(alignof(struct WatermarkAlloc), align);
 #ifdef DEBUG
+  printf("==== ALLOCATING =====\n");
   printf("=== FREESPACE TREE ===\n");
   debug_print_tree(0, arena->root_freespace);
   printf("=== TREEALLOC TREE ===\n");
   debug_print_tree(0, arena->root_treealloc);
+  printf("=== END OF TREES ====\n");
 #endif
   if (arena->root_freespace == NULL) {
     // Handle being out of freespace.
@@ -406,12 +418,6 @@ void *alloc(Arena *arena, uintptr_t size, uintptr_t align) {
       TreeAlloc *insert_point = search_by_address((TreeAlloc*) arena->root_treealloc, region);
       insert_right(&arena->root_treealloc, region, insert_point);
     }
-    if (arena->root_treealloc == NULL) {
-      insert_singleton(&arena->root_treealloc, region);
-    } else {
-      TreeAlloc *insert_point = search_by_address((TreeAlloc*) arena->root_treealloc, region);
-      insert_right(&arena->root_treealloc, region, insert_point);
-    }
     if (new_free_size >= sizeof(FreeSpace)) {
       // If there's enough free space after the allocation, use it!
       region->size = new_size;  // Safe because the allocated region tree is not sorted by size.