diff --git a/ChangeLog b/ChangeLog
index ca07d5cab..4838d9566 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-11-11  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* include/grub/ieee1275/ieee1275.h (grub_ieee1275_set_property):
+	Fix prototype.
+
 2011-11-11  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	Fix mips compilation.
diff --git a/include/grub/ieee1275/ieee1275.h b/include/grub/ieee1275/ieee1275.h
index 81590ee4b..be3835a42 100644
--- a/include/grub/ieee1275/ieee1275.h
+++ b/include/grub/ieee1275/ieee1275.h
@@ -173,7 +173,8 @@ int EXPORT_FUNC(grub_ieee1275_claim) (grub_addr_t addr, grub_size_t size,
 				      unsigned int align, grub_addr_t *result);
 int EXPORT_FUNC(grub_ieee1275_release) (grub_addr_t addr, grub_size_t size);
 int EXPORT_FUNC(grub_ieee1275_set_property) (grub_ieee1275_phandle_t phandle,
-					     const char *propname, void *buf,
+					     const char *propname,
+					     const void *buf,
 					     grub_size_t size,
 					     grub_ssize_t *actual);
 int EXPORT_FUNC(grub_ieee1275_set_color) (grub_ieee1275_ihandle_t ihandle,