diff --git a/src/main/java/net/imglib2/kdtree/KDTreeUtils.java b/src/main/java/net/imglib2/kdtree/KDTreeUtils.java
index e60ee2014..2f937912a 100644
--- a/src/main/java/net/imglib2/kdtree/KDTreeUtils.java
+++ b/src/main/java/net/imglib2/kdtree/KDTreeUtils.java
@@ -226,7 +226,7 @@ static double[][] unflatten( double[] positions, final int n )
 		for (int i = 0; i < positions.length; ++i )
 		{
 			final int d = i % n;
-			unflattened[ d ][ i / n + d ] = positions[ i ];
+			unflattened[ d ][ i / n ] = positions[ i ];
 		}
 		return unflattened;