diff --git a/ChangeLog b/ChangeLog
index 482874788..0d06dee3b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-07-20  Colin Watson  <cjwatson@ubuntu.com>
+
+	* kern/emu/getroot.c (grub_util_get_grub_dev): Use xasprintf.
+
 2010-07-20  Colin Watson  <cjwatson@ubuntu.com>
 
 	* disk/loopback.c (grub_cmd_loopback): Don't leak a grub_file_t
diff --git a/kern/emu/getroot.c b/kern/emu/getroot.c
index 9f89bf657..58dbac9b4 100644
--- a/kern/emu/getroot.c
+++ b/kern/emu/getroot.c
@@ -695,7 +695,7 @@ grub_util_get_grub_dev (const char *os_dev)
 	  if (q)
 	    *q = ',';
 
-	  asprintf (&grub_dev, "md/%s", p);
+	  grub_dev = xasprintf ("md/%s", p);
 	  free (p);
 	}
       else
@@ -708,7 +708,7 @@ grub_util_get_grub_dev (const char *os_dev)
 	if (mdadm_name)
 	  {
 	    free (grub_dev);
-	    asprintf (&grub_dev, "md/%s", mdadm_name);
+	    grub_dev = xasprintf ("md/%s", mdadm_name);
 	    free (mdadm_name);
 	  }
       }