diff --git a/src/net/bitfield.rs b/src/net/bitfield.rs
index 24a6b6b..f0c8623 100644
--- a/src/net/bitfield.rs
+++ b/src/net/bitfield.rs
@@ -61,7 +61,7 @@ impl fmt::Debug for BitField {
 fn test_bitfield_is_set() {
     // 01234567 89abcdef
     // 00111110 01111111
-    let bf = BitField::new(vec![62, 127]);
+    let bf = BitField::new(vec![62, 127], 16);
 
     assert!(!bf.is_set(0));
     assert!(!bf.is_set(1));
@@ -84,7 +84,7 @@ fn test_bitfield_is_set() {
 
 #[test]
 fn test_bitfield_set() {
-    let mut bf = BitField::new(vec![0, 0]);
+    let mut bf = BitField::new(vec![0, 0], 16);
     bf.set(0);
     assert_eq!(bf.bits[0], 128);
     bf.set(7);
@@ -97,7 +97,7 @@ fn test_bitfield_set() {
 
 #[test]
 fn test_bitfield_unset() {
-    let mut bf = BitField::new(vec![255, 255]);
+    let mut bf = BitField::new(vec![255, 255], 16);
     bf.unset(0);
     assert_eq!(bf.bits[0], 255-128);
     bf.unset(7);