diff --git a/src/arch/x86/acpi_bert_storage.c b/src/arch/x86/acpi_bert_storage.c
index ec31917444..f1dcf47c23 100644
--- a/src/arch/x86/acpi_bert_storage.c
+++ b/src/arch/x86/acpi_bert_storage.c
@@ -200,7 +200,7 @@ void *new_cper_fw_error_crashlog(acpi_generic_error_status_t *status, size_t cl_
 {
 	void *cl_data = bert_allocate_storage(cl_size);
 	if (!cl_data) {
-		printk(BIOS_ERR, "Error: Crashlog entry (size %lu) would exceed available region\n",
+		printk(BIOS_ERR, "Error: Crashlog entry (size %zu) would exceed available region\n",
 			cl_size);
 		return NULL;
 	}
diff --git a/src/soc/intel/common/block/systemagent/memmap.c b/src/soc/intel/common/block/systemagent/memmap.c
index ce842e850f..a67d050fcc 100644
--- a/src/soc/intel/common/block/systemagent/memmap.c
+++ b/src/soc/intel/common/block/systemagent/memmap.c
@@ -63,7 +63,7 @@ void bert_reserved_region(void **start, size_t *size)
 	*start = cbmem_add(CBMEM_ID_ACPI_BERT, BERT_REGION_MAX_SIZE);
 	*size = BERT_REGION_MAX_SIZE;
 
-	printk(BIOS_DEBUG, "Reserving BERT start %lx, size %lx\n", (uintptr_t)*start, *size);
+	printk(BIOS_DEBUG, "Reserving BERT start %lx, size %zx\n", (uintptr_t)*start, *size);
 }
 
 void fill_postcar_frame(struct postcar_frame *pcf)