diff --git a/libc/kernel/uapi/linux/hyperv.h b/libc/kernel/uapi/linux/hyperv.h
index fb114ad..daa8fc7 100644
--- a/libc/kernel/uapi/linux/hyperv.h
+++ b/libc/kernel/uapi/linux/hyperv.h
@@ -70,8 +70,8 @@
 };
 struct hv_fcopy_hdr {
   __u32 operation;
-  uuid_le service_id0;
-  uuid_le service_id1;
+  __u8 service_id0[16];
+  __u8 service_id1[16];
 } __attribute__((packed));
 #define OVER_WRITE 0x1
 #define CREATE_PATH 0x2