diff --git a/neo/SmartContract/Native/Tokens/NeoToken.cs b/neo/SmartContract/Native/Tokens/NeoToken.cs
index 6de1ac1970..d9e2dd2d4f 100644
--- a/neo/SmartContract/Native/Tokens/NeoToken.cs
+++ b/neo/SmartContract/Native/Tokens/NeoToken.cs
@@ -93,7 +93,7 @@ private BigInteger CalculateBonus(Snapshot snapshot, BigInteger value, uint star
                 }
                 amount += (iend - istart) * Blockchain.GenerationAmount[ustart];
             }
-            amount += GAS.GetSysFeeAmount(snapshot, end - 1) - (start == 0 ? 0 : GAS.GetSysFeeAmount(snapshot, start - 1));
+            amount += (GAS.GetSysFeeAmount(snapshot, end - 1) - (start == 0 ? 0 : GAS.GetSysFeeAmount(snapshot, start - 1))) / GAS.Factor;
             return value * amount * GAS.Factor / TotalAmount;
         }