diff --git a/src/fido/cbor_get_info.c b/src/fido/cbor_get_info.c
index 068ace7..9f0dd9e 100644
--- a/src/fido/cbor_get_info.c
+++ b/src/fido/cbor_get_info.c
@@ -117,7 +117,7 @@ int cbor_get_info() {
     CBOR_CHECK(cbor_encode_uint(&mapEncoder, PICO_FIDO_VERSION)); // firmwareVersion
 
     CBOR_CHECK(cbor_encode_uint(&mapEncoder, 0x0F));
-    CBOR_CHECK(cbor_encode_uint(&mapEncoder, 1024)); // maxCredBlobLength
+    CBOR_CHECK(cbor_encode_uint(&mapEncoder, MAX_CREDBLOB_LENGTH)); // maxCredBlobLength
 
     CBOR_CHECK(cbor_encode_uint(&mapEncoder, 0x15));
     CBOR_CHECK(cbor_encoder_create_array(&mapEncoder, &arrayEncoder, 2));
diff --git a/src/fido/fido.h b/src/fido/fido.h
index c1d54e7..df8e888 100644
--- a/src/fido/fido.h
+++ b/src/fido/fido.h
@@ -78,6 +78,7 @@ extern void set_opts(uint8_t);
 #define MAX_CREDENTIAL_COUNT_IN_LIST 16
 #define MAX_CRED_ID_LENGTH        1024
 #define MAX_RESIDENT_CREDENTIALS  256
+#define MAX_CREDBLOB_LENGTH       128
 
 typedef struct known_app {
     const uint8_t *rp_id_hash;