diff --git a/sim/frv/ChangeLog b/sim/frv/ChangeLog
index e82e9c8..bc42a81 100644
--- a/sim/frv/ChangeLog
+++ b/sim/frv/ChangeLog
@@ -1,5 +1,9 @@
 2021-06-27  Mike Frysinger  <vapier@gentoo.org>
 
+	* sim-if.c (sim_open): Mark backend_data const.
+
+2021-06-27  Mike Frysinger  <vapier@gentoo.org>
+
 	* sim-main.h (SIM_ENGINE_RESTART_HOOK): Delete 0.
 
 2021-06-27  Mike Frysinger  <vapier@gentoo.org>
diff --git a/sim/frv/sim-if.c b/sim/frv/sim-if.c
index ac5d83c..530a8dd 100644
--- a/sim/frv/sim-if.c
+++ b/sim/frv/sim-if.c
@@ -103,7 +103,7 @@
     bfd *prog_bfd = STATE_PROG_BFD (sd);
     if (prog_bfd != NULL)
       {
-	struct elf_backend_data *backend_data;
+	const struct elf_backend_data *backend_data;
 
 	if (bfd_get_arch (prog_bfd) != bfd_arch_frv)
 	  {