diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 5f9d0bc839ba..9008ed5ef4ce 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -353,6 +353,7 @@ void __init dmi_scan_machine(void)
 				return;
 			}
 		}
+		dmi_iounmap(p, 0x10000);
 	}
  out:	printk(KERN_INFO "DMI not present or invalid.\n");
 }