diff --git a/libc/kernel/uapi/linux/stm.h b/libc/kernel/uapi/linux/stm.h
index 1c7f7f3..b1453f7 100644
--- a/libc/kernel/uapi/linux/stm.h
+++ b/libc/kernel/uapi/linux/stm.h
@@ -28,7 +28,7 @@
   __u16 width;
   __u16 __reserved_0;
   __u32 __reserved_1;
-  char id[0];
+  char id[];
 };
 #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id)
 #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id)