diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 65e1d63ed2326..ca51082a9f786 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -510,6 +510,7 @@ s! {
     }
 
     // linux/can.h
+    #[cfg(libc_align)]
     #[repr(align(8))]
     pub struct can_frame {
         pub can_id: canid_t,
@@ -520,6 +521,7 @@ s! {
         pub data: [u8; CAN_MAX_DLEN],
     }
 
+    #[cfg(libc_align)]
     #[repr(align(8))]
     pub struct canfd_frame {
         pub can_id: canid_t,