diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 441673a56bb..466663775a9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2014-03-01  Mark Kettenis  <kettenis@gnu.org>
+
+	* i386obsd-nat.c (i386obsd_supply_pcb): Cast 'sf' to 'gdb_byte *'.
+
 2014-03-01  Mark Kettenis  <kettenis@gnu.org>
 
 	* mips64obsd-nat.c: Include "obsd-nath".
diff --git a/gdb/i386obsd-nat.c b/gdb/i386obsd-nat.c
index f4d07fe202c..a0b0808673b 100644
--- a/gdb/i386obsd-nat.c
+++ b/gdb/i386obsd-nat.c
@@ -64,7 +64,7 @@ i386obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
   if ((pcb->pcb_flags & PCB_SAVECTX) == 0)
     {
       /* Yes, we have a frame that matches cpu_switch().  */
-      read_memory (pcb->pcb_esp, (char *) &sf, sizeof sf);
+      read_memory (pcb->pcb_esp, (gdb_byte *) &sf, sizeof sf);
       pcb->pcb_esp += sizeof (struct switchframe);
       regcache_raw_supply (regcache, I386_EDI_REGNUM, &sf.sf_edi);
       regcache_raw_supply (regcache, I386_ESI_REGNUM, &sf.sf_esi);