diff --git a/src/unistd/src/lib.rs b/src/unistd/src/lib.rs
index a07735fba1cf149d1aa0022ef9dd58bc7c2ee0e3..10d3c6e4abeab4bb55436b079777fa0dd6cf1520 100644
--- a/src/unistd/src/lib.rs
+++ b/src/unistd/src/lib.rs
@@ -42,7 +42,7 @@ pub const STDOUT_FILENO: c_int = 1;
 pub const STDERR_FILENO: c_int = 2;
 
 #[no_mangle]
-pub static mut environ: *mut *mut c_char = ptr::null();
+pub static mut environ: *mut *mut c_char = ptr::null_mut();
 
 #[no_mangle]
 pub extern "C" fn _exit(status: c_int) {