diff --git a/src/new/apple/xnu/net/bpf.rs b/src/new/apple/xnu/net/bpf.rs
index dc0aae84de28f..d160d9db147ba 100644
--- a/src/new/apple/xnu/net/bpf.rs
+++ b/src/new/apple/xnu/net/bpf.rs
@@ -47,7 +47,7 @@ pub const DLT_ATM_RFC1483: c_uint = 11; // LLC/SNAP encapsulated atm
 pub const DLT_RAW: c_uint = 12; // raw IP
 pub const DLT_LOOP: c_uint = 108;
 
-pub const BPF_ALIGNMENT: c_int = size_of::<i32>() as c_int;
+pub const BPF_ALIGNMENT: size_t = size_of::<i32>();
 
 pub const BIOCGRSIG: c_ulong = _IOR::<c_uint>('B' as c_ulong, 114);
 pub const BIOCSRSIG: c_ulong = _IOW::<c_uint>('B' as c_ulong, 115);