diff --git a/rstar/CHANGELOG.md b/rstar/CHANGELOG.md
index 68832b1..2f6d912 100644
--- a/rstar/CHANGELOG.md
+++ b/rstar/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 ## Fixed
 - Fix excessive memory retention in `bulk_load` from `Vec::split_off` over-capacity
+- Fix transcription error in implementation of OMT bulk loading leading to nodes which are too large.
 
 ## Changed
 - Made `RStar` methods take `Point` and `Envelope` as owned values where it makes sense ([PR](https://github.com/georust/rstar/pull/189))
diff --git a/rstar/src/algorithm/bulk_load/cluster_group_iterator.rs b/rstar/src/algorithm/bulk_load/cluster_group_iterator.rs
index da64549..f573ea2 100644
--- a/rstar/src/algorithm/bulk_load/cluster_group_iterator.rs
+++ b/rstar/src/algorithm/bulk_load/cluster_group_iterator.rs
@@ -75,7 +75,7 @@ where
 
     let max_dimension = <T::Envelope as Envelope>::Point::DIMENSIONS as f32;
     // Try to split all clusters among all dimensions as evenly as possible by taking the nth root.
-    number_of_clusters.powf(1. / max_dimension).ceil() as usize
+    number_of_clusters.powf(1. / max_dimension).floor() as usize
 }
 
 fn div_up(dividend: usize, divisor: usize) -> usize {