diff --git a/include/uapi/asm-generic/ipcbuf.h b/include/uapi/asm-generic/ipcbuf.h
index 76982b2a1b58..3dbcc1e771c0 100644
--- a/include/uapi/asm-generic/ipcbuf.h
+++ b/include/uapi/asm-generic/ipcbuf.h
@@ -27,8 +27,8 @@ struct ipc64_perm {
 	unsigned char		__pad1[4 - sizeof(__kernel_mode_t)];
 	unsigned short		seq;
 	unsigned short		__pad2;
-	unsigned long		__unused1;
-	unsigned long		__unused2;
+	__kernel_ulong_t	__unused1;
+	__kernel_ulong_t	__unused2;
 };
 
 #endif /* __ASM_GENERIC_IPCBUF_H */