diff --git a/src/collection/hashset.scad b/src/collection/hashset.scad
index 47c08575..f3d46021 100644
--- a/src/collection/hashset.scad
+++ b/src/collection/hashset.scad
@@ -4,10 +4,11 @@ use <_impl/_hashset_add_impl.scad>;
 	
 function hashset(lt, eq = function(e1, e2) e1 == e2, hash = function(e) _str_hash(e), bucket_numbers) =
     let(
+		leng_lt = len(lt),
 	    lt_undef = is_undef(lt),
 		bucket_numbers_undef = is_undef(bucket_numbers),
 		b_numbers = bucket_numbers_undef ? 
-		               (lt_undef ? 16 : len(lt)) : bucket_numbers,
+		               (lt_undef ? 16 : ceil(sqrt(leng_lt))) : bucket_numbers,
 	    buckets = [for(i = [0:b_numbers - 1]) []]
 	)
-	lt_undef ? buckets : _hashset(lt, len(lt), buckets, eq, hash);
\ No newline at end of file
+	lt_undef ? buckets : _hashset(lt, leng_lt, buckets, eq, hash);
\ No newline at end of file