diff --git a/module/os/freebsd/zfs/spa_os.c b/module/os/freebsd/zfs/spa_os.c
index 45ea10bb4..449c16248 100644
--- a/module/os/freebsd/zfs/spa_os.c
+++ b/module/os/freebsd/zfs/spa_os.c
@@ -94,6 +94,8 @@ spa_generate_rootconf(const char *name)
 	for (i = 0; i < count; i++) {
 		uint64_t txg;
 
+		if (configs[i] == NULL)
+			continue;
 		txg = fnvlist_lookup_uint64(configs[i], ZPOOL_CONFIG_POOL_TXG);
 		if (txg > best_txg) {
 			best_txg = txg;