diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index a711d22339ea..761b28b1427d 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -1444,8 +1444,8 @@ static ssize_t fadump_register_store(struct kobject *kobj,
 		break;
 	case 1:
 		if (fw_dump.dump_registered == 1) {
-			ret = -EEXIST;
-			goto unlock_out;
+			/* Un-register Firmware-assisted dump */
+			fadump_unregister_dump(&fdm);
 		}
 		/* Register Firmware-assisted dump */
 		ret = register_fadump();