diff --git a/kernel/core_hook.c b/kernel/core_hook.c
index e384874b..8daa2b8e 100644
--- a/kernel/core_hook.c
+++ b/kernel/core_hook.c
@@ -956,6 +956,18 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
 				pr_info("susfs: copy_to_user() failed\n");
 			return 0;
 		}
+		if (arg2 == CMD_SUSFS_UMOUNT_FOR_ZYGOTE_ISO_SERVICE) {
+			int error = 0;
+			if (arg3 != 0 && arg3 != 1) {
+				pr_err("susfs: CMD_SUSFS_UMOUNT_FOR_ZYGOTE_ISO_SERVICE -> arg3 can only be 0 or 1\n");
+				return 0;
+			}
+			susfs_is_umount_for_zygote_iso_service_enabled = arg3;
+			pr_info("susfs: CMD_SUSFS_UMOUNT_FOR_ZYGOTE_ISO_SERVICE -> susfs_is_umount_for_zygote_iso_service_enabled: %lu\n", arg3);
+			if (copy_to_user((void __user*)arg5, &error, sizeof(error)))
+				pr_info("susfs: copy_to_user() failed\n");
+			return 0;
+		}
 #endif //#ifdef CONFIG_KSU_SUSFS_SUS_MOUNT
 #ifdef CONFIG_KSU_SUSFS_SUS_KSTAT
 		if (arg2 == CMD_SUSFS_ADD_SUS_KSTAT) {