diff --git a/src/soc/intel/xeon_sp/uncore_acpi.c b/src/soc/intel/xeon_sp/uncore_acpi.c
index e2b262e..2cc3c8f 100644
--- a/src/soc/intel/xeon_sp/uncore_acpi.c
+++ b/src/soc/intel/xeon_sp/uncore_acpi.c
@@ -149,6 +149,7 @@
 	/* create all subtables for processors */
 	current = acpi_create_srat_lapics(current);
 
+	memset(srat_mem, 0, sizeof(srat_mem));
 	mem_count = get_srat_memory_entries(srat_mem);
 	for (int i = 0; i < mem_count; ++i) {
 		printk(BIOS_DEBUG, "adding srat memory %d entry length: %d, addr: 0x%x%x, "