diff --git a/roaring/btree_test.go b/roaring/btree_test.go
index c3c02af3d..f0f528a7b 100644
--- a/roaring/btree_test.go
+++ b/roaring/btree_test.go
@@ -689,7 +689,7 @@ func TestBtreeDelete0(t *testing.T) {
 }
 
 func TestBtreeDelete1(t *testing.T) {
-	const N = 130000
+	const N = 13000
 	for _, x := range []int{0, -1, 0x555555, 0xaaaaaa, 0x333333, 0xcccccc, 0x314159} {
 		r := treeNew()
 		set := r.Set
@@ -788,7 +788,7 @@ func benchmarkDelRnd(b *testing.B, n int) {
 }
 
 func TestBtreeDelete2(t *testing.T) {
-	const N = 100000
+	const N = 10000
 	for _, x := range []int{0, -1, 0x555555, 0xaaaaaa, 0x333333, 0xcccccc, 0x314159} {
 		r := treeNew()
 		set := r.Set
@@ -1468,7 +1468,7 @@ func TestBtreePut(t *testing.T) {
 }
 
 func TestBtreeSeek(t *testing.T) {
-	const N = 1 << 13
+	const N = 1 << 11
 	tr := treeNew()
 	for i := 0; i < N; i++ {
 		k := 2*i + 1