diff --git a/include/gdb/ChangeLog b/include/gdb/ChangeLog
index 3b84cad18..119264eb3 100644
--- a/include/gdb/ChangeLog
+++ b/include/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2010-04-13  Mike Frysinger  <vapier@gentoo.org>
+
+	* remote-sim.h (sim_write): Add const to buf arg.
+
 2009-11-24  DJ Delorie  <dj@redhat.com>
 
 	* sim-rx.h: New.
diff --git a/include/gdb/remote-sim.h b/include/gdb/remote-sim.h
index cfb1c1141..37f029ad7 100644
--- a/include/gdb/remote-sim.h
+++ b/include/gdb/remote-sim.h
@@ -175,7 +175,7 @@ int sim_read PARAMS ((SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
    memory. Store bytes starting at virtual address MEM. Result is
    number of bytes write, or zero if error.  */
 
-int sim_write PARAMS ((SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length));
+int sim_write PARAMS ((SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length));
 
 
 /* Fetch register REGNO storing its raw (target endian) value in the