diff --git a/core/src/apps/binance/helpers.py b/core/src/apps/binance/helpers.py
index e6b09fe7d..b73218455 100644
--- a/core/src/apps/binance/helpers.py
+++ b/core/src/apps/binance/helpers.py
@@ -15,7 +15,7 @@ MSG_TRANSFER_BLUEPRINT = '{{"inputs":[{inputs}],"outputs":[{outputs}]}}'
 MSG_NEWORDER_BLUEPRINT = '{{"id":"{id}","ordertype":{ordertype},"price":{price},"quantity":{quantity},"sender":"{sender}","side":{side},"symbol":"{symbol}","timeinforce":{timeinforce}}}'
 MSG_CANCEL_BLUEPRINT = '{{"refid":"{refid}","sender":"{sender}","symbol":"{symbol}"}}'
 INPUT_OUTPUT_BLUEPRINT = '{{"address":"{address}","coins":[{coins}]}}'
-COIN_BLUEPRINT = '{{"amount":"{amount}","denom":"{denom}"}}'
+COIN_BLUEPRINT = '{{"amount":{amount},"denom":"{denom}"}}'
 
 # 1*10^8 Jagers equal 1 BNB https://www.binance.vision/glossary/jager
 DIVISIBILITY = const(8)
diff --git a/core/tests/test_apps.binance.sign_tx.py b/core/tests/test_apps.binance.sign_tx.py
index 94033018e..7e69bfd94 100644
--- a/core/tests/test_apps.binance.sign_tx.py
+++ b/core/tests/test_apps.binance.sign_tx.py
@@ -76,8 +76,8 @@ class TestBinanceSign(unittest.TestCase):
     def test_transfer_signature(self):
         # source of testing data 
         # https://github.com/binance-chain/javascript-sdk/blob/master/__tests__/fixtures/transfer.json        
-        json_hex_msg = "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"
-        expected_signature = "97b4c2e41b0d0f61ddcf4020fff0ecb227d6df69b3dd7e657b34be0e32b956e22d0c6be5832d25353ae24af0bb223d4a5337320518c4e7708b84c8e05eb6356b"
+        json_hex_msg = "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"
+        expected_signature = "faf5b908d6c4ec0c7e2e7d8f7e1b9ca56ac8b1a22b01655813c62ce89bf84a4c7b14f58ce51e85d64c13f47e67d6a9187b8f79f09e0a9b82019f47ae190a4db3"
         public_key = "029729a52e4e3c2b4a4e52aa74033eedaf8ba1df5ab6d1f518fd69e67bbd309b0e"
         private_key = "90335b9d2153ad1a9799a3ccc070bd64b4164e9642ee1dd48053c33f9a3a05e9"