diff --git a/sys/ia64/ia64/dump_machdep.c b/sys/ia64/ia64/dump_machdep.c
index 2af310f8bad9..00994620240e 100644
--- a/sys/ia64/ia64/dump_machdep.c
+++ b/sys/ia64/ia64/dump_machdep.c
@@ -174,7 +174,7 @@ cb_dumphdr(EFI_MEMORY_DESCRIPTOR *mdp, int seqnr, void *arg)
 	phdr.p_memsz = mdp->NumberOfPages << EFI_PAGE_SHIFT;
 	phdr.p_align = EFI_PAGE_SIZE;
 
-	error = buf_write(di->priv, (char*)&phdr, sizeof(phdr));
+	error = buf_write(di, (char*)&phdr, sizeof(phdr));
 	fileofs += phdr.p_filesz;
 	return (error);
 }