diff --git a/mm/memblock.c b/mm/memblock.c
index 4dcb2ee35eca..d9f4b82cbffe 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -2249,6 +2249,7 @@ static const char * const flagname[] = {
 	[ilog2(MEMBLOCK_MIRROR)] = "MIRROR",
 	[ilog2(MEMBLOCK_NOMAP)] = "NOMAP",
 	[ilog2(MEMBLOCK_DRIVER_MANAGED)] = "DRV_MNG",
+	[ilog2(MEMBLOCK_RSRV_NOINIT)] = "RSV_NIT",
 };
 
 static int memblock_debug_show(struct seq_file *m, void *private)