diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 51918a5526..0a7266db3a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2012-05-12  Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* microblaze-rom.c (_initialize_picobug_rom): Add prototype.
+
 2012-05-07  Sergio Durigan Junior  <sergiodj@redhat.com>
 
 	* probe.c (parse_probes): Move conditional to check for
diff --git a/gdb/microblaze-rom.c b/gdb/microblaze-rom.c
index 014e4217b2..c713b21ce0 100644
--- a/gdb/microblaze-rom.c
+++ b/gdb/microblaze-rom.c
@@ -25,6 +25,8 @@
 #include "serial.h"
 #include "regcache.h"
 
+void _initialize_picobug_rom (void);
+
 static char *picobug_inits[] =
 {"\r", NULL};
 
@@ -174,7 +176,7 @@ init_picobug_cmds (void)
 }
 
 void
-_initialize_picobug_rom ()
+_initialize_picobug_rom (void)
 {
   int i;