diff --git a/src/backend/libc/termios/types.rs b/src/backend/libc/termios/types.rs
index cf400af07..ed9a8a3f6 100644
--- a/src/backend/libc/termios/types.rs
+++ b/src/backend/libc/termios/types.rs
@@ -11,5 +11,5 @@ use crate::ffi;
 pub type tcflag_t = ffi::c_ulong;
 #[cfg(target_os = "redox")]
 pub type tcflag_t = u32;
-#[cfg(not(any(apple, target_os = "redox")))]
+#[cfg(not(any(target_os = "wasi", apple, target_os = "redox")))]
 pub type tcflag_t = ffi::c_uint;