diff --git a/sys/sys/_cscan_atomic.h b/sys/sys/_cscan_atomic.h
index aed96580e1e4..b458c24841bf 100644
--- a/sys/sys/_cscan_atomic.h
+++ b/sys/sys/_cscan_atomic.h
@@ -373,6 +373,7 @@ void	kcsan_atomic_thread_fence_seq_cst(void);
 #define	atomic_thread_fence_acq_rel	kcsan_atomic_thread_fence_acq_rel
 #define	atomic_thread_fence_rel		kcsan_atomic_thread_fence_rel
 #define	atomic_thread_fence_seq_cst	kcsan_atomic_thread_fence_seq_cst
+#define	atomic_interrupt_fence		__compiler_membar
 
 #endif /* !KCSAN_RUNTIME */