diff --git a/hw/application_fpga/fw/tk1/partition_table.c b/hw/application_fpga/fw/tk1/partition_table.c
index a75b2d9..0f35d62 100644
--- a/hw/application_fpga/fw/tk1/partition_table.c
+++ b/hw/application_fpga/fw/tk1/partition_table.c
@@ -17,11 +17,13 @@ enum part_status part_get_status(void)
 	return part_status;
 }
 
-static void part_digest(struct partition_table *part_table, uint8_t *out_digest,
-			size_t out_len);
+static void part_checksum(struct partition_table *part_table,
+			  uint8_t *out_digest, size_t out_len);
 
-static void part_digest(struct partition_table *part_table, uint8_t *out_digest,
-			size_t out_len)
+// part_digest computes a checksum over the partition table to detect
+// flash problems
+static void part_checksum(struct partition_table *part_table,
+			  uint8_t *out_digest, size_t out_len)
 {
 	int blake2err = 0;
 
@@ -50,7 +52,7 @@ int part_table_read(struct partition_table_storage *storage)
 	    ADDR_PARTITION_TABLE_0,
 	    ADDR_PARTITION_TABLE_1,
 	};
-	uint8_t check_digest[PART_DIGEST_SIZE] = {0};
+	uint8_t check_digest[PART_CHECKSUM_SIZE] = {0};
 
 	if (storage == NULL) {
 		return -1;
@@ -64,10 +66,10 @@ int part_table_read(struct partition_table_storage *storage)
 				    sizeof(*storage)) != 0) {
 			return -1;
 		}
-		part_digest(&storage->table, check_digest,
-			    sizeof(check_digest));
+		part_checksum(&storage->table, check_digest,
+			      sizeof(check_digest));
 
-		if (memeq(check_digest, storage->check_digest,
+		if (memeq(check_digest, storage->checksum,
 			  sizeof(check_digest))) {
 			if (i == 1) {
 				part_status = PART_SLOT0_INVALID;
@@ -91,8 +93,8 @@ int part_table_write(struct partition_table_storage *storage)
 		return -1;
 	}
 
-	part_digest(&storage->table, storage->check_digest,
-		    sizeof(storage->check_digest));
+	part_checksum(&storage->table, storage->checksum,
+		      sizeof(storage->checksum));
 
 	for (int i = 0; i < 2; i++) {
 		flash_sector_erase(offset[i]);
diff --git a/hw/application_fpga/fw/tk1/partition_table.h b/hw/application_fpga/fw/tk1/partition_table.h
index dd4fa84..04ca116 100644
--- a/hw/application_fpga/fw/tk1/partition_table.h
+++ b/hw/application_fpga/fw/tk1/partition_table.h
@@ -46,7 +46,7 @@
 #define SIZE_STORAGE_AREA 0x20000UL // 128KiB
 #define N_STORAGE_AREA 4
 
-#define PART_DIGEST_SIZE 16
+#define PART_CHECKSUM_SIZE 16
 
 enum part_status {
 	PART_SLOT0_INVALID = 1,
@@ -70,6 +70,8 @@ enum part_status {
 /*  - 1 byte status.			*/
 /*  - 16 bytes random nonce.		*/
 /*  - 16 bytes authentication tag.	*/
+/**/
+/*- Checksum over the above             */
 
 struct auth_metadata {
 	uint8_t nonce[16];
@@ -99,7 +101,7 @@ struct partition_table {
 
 struct partition_table_storage {
 	struct partition_table table;
-	uint8_t check_digest[PART_DIGEST_SIZE];
+	uint8_t checksum[PART_CHECKSUM_SIZE]; // Helps detect flash problems
 } __attribute__((packed));
 
 enum part_status part_get_status(void);