diff --git a/README.md b/README.md
index 2732566be..3bda79f9f 100644
--- a/README.md
+++ b/README.md
@@ -155,7 +155,6 @@ large majority of use cases.
 
  - [ ] Immix-style opportunistic evacuation
  - [ ] Overflow allocation
- - [ ] Lazy identification of empty blocks
  - [ ] Generational GC via sticky mark bits
  - [ ] Generational GC with semi-space nursery
  - [ ] Concurrent marking with SATB barrier
diff --git a/whippet.h b/whippet.h
index 1f72430d6..3c1fb070b 100644
--- a/whippet.h
+++ b/whippet.h
@@ -934,7 +934,7 @@ static size_t next_hole(struct mutator *mut) {
     size_t granules = next_hole_in_block(mut);
     if (granules) {
       // If the hole spans only part of a block, give it to the mutator.
-      if (granules <= GRANULES_PER_BLOCK)
+      if (granules < GRANULES_PER_BLOCK)
         return granules;
       // Sweeping found a completely empty block.  If we have pending
       // pages to release to the OS, we should unmap this block.