diff --git a/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_app.json b/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_app.json
index e3e63f4..338c1cf 100644
--- a/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_app.json
+++ b/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_app.json
@@ -101,7 +101,7 @@
             "storage.storage_type"                      : "TDB_INTERNAL",
             "fota.block-device-type"                    : "FOTA_INTERNAL_FLASH_MBED_OS_BD",
             "fota.storage-start-address"                : "MBED_ROM_START + MBED_BOOTLOADER_FLASH_BANK_SIZE + MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_SIZE",
-            "storage_tdb_internal.internal_size"        : "(2*16*1024)",
+            "storage_tdb_internal.internal_size"        : "(2*64*1024)",
             "platform.crash-capture-enabled"            : false,
             "storage_tdb_internal.internal_base_address": "(MBED_ROM_START + MBED_BOOTLOADER_FLASH_BANK_SIZE)"
         },	                   
diff --git a/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_lib.json.template b/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_lib.json.template
index fda3487..e590614 100644
--- a/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_lib.json.template
+++ b/presets/TARGET_DISCO_F769NI/TARGET_BL_INTERNAL_FLASH/mbed_lib.json.template
@@ -6,7 +6,7 @@
                 "MBED_BOOTLOADER_FLASH_BANK_SIZE=MBED_ROM_SIZE/2",
                 "MBED_CONF_STORAGE_STORAGE_TYPE=TDB_INTERNAL",
                 "MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_BASE_ADDRESS=(MBED_ROM_START + MBED_BOOTLOADER_FLASH_BANK_SIZE)",
-                "MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_SIZE=(2*16*1024)",
+                "MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_SIZE=(2*64*1024)",
                 "MBED_CLOUD_CLIENT_FOTA_BLOCK_DEVICE_TYPE=FOTA_INTERNAL_FLASH_MBED_OS_BD",
                 "MBED_CLOUD_CLIENT_FOTA_STORAGE_START_ADDR=(MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_BASE_ADDRESS + MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_SIZE)",
                 "MBED_CLOUD_CLIENT_FOTA_STORAGE_SIZE=(MBED_BOOTLOADER_FLASH_BANK_SIZE - MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_SIZE)"