diff --git a/roaring/roaring.go b/roaring/roaring.go
index 180768ea8..584a614df 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -454,7 +454,7 @@ func (b *Bitmap) unionIntoTargetSingle(target *Bitmap, other *Bitmap) {
 // participate in the union. This significantly reduces allocations. In addition,
 // because we perform the unions one container at a time accross all the bitmaps, we
 // can calculate summary statistics that allow us to make more efficient decisions
-// up front. For example, imagine trying to combine a union accross the following three
+// up front. For example, imagine trying to perform a union accross the following three
 // bitsets:
 //
 //     1. Bitmap A: Single array container at key 0 with 400 values in it.