diff --git a/src/unix/bsd/netbsdlike/netbsd/aarch64.rs b/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
new file mode 100644
index 0000000000000000000000000000000000000000..6aa9950ed1053d17940518e8db2f69f74e8a12a3
--- /dev/null
+++ b/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
@@ -0,0 +1,3 @@
+pub type c_long = i64;
+pub type c_ulong = u64;
+pub type c_char = u8;
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index b0cf20f65e1cbea10c3879f5d8ba18740e8a55bd..917593ee6307044f96c16659239e8b97c45a40aa 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -1110,7 +1110,10 @@ extern {
 }
 
 cfg_if! {
-    if #[cfg(target_arch = "arm")] {
+    if #[cfg(target_arch = "aarch64")] {
+        mod aarch64;
+        pub use self::aarch64::*;
+    } else if #[cfg(target_arch = "arm")] {
         mod arm;
         pub use self::arm::*;
     } else if #[cfg(target_arch = "powerpc")] {