diff --git a/params/protocol_params.go b/params/protocol_params.go
index e8b044f450..bb506af015 100644
--- a/params/protocol_params.go
+++ b/params/protocol_params.go
@@ -32,7 +32,7 @@ const (
 
 	MaximumExtraDataSize  uint64 = 32    // Maximum size extra data may be after Genesis.
 	ExpByteGas            uint64 = 10    // Times ceil(log256(exponent)) for the EXP instruction.
-	SloadGas              uint64 = 50    // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
+	SloadGas              uint64 = 50    //
 	CallValueTransferGas  uint64 = 9000  // Paid for CALL when the value transfer is non-zero.
 	CallNewAccountGas     uint64 = 25000 // Paid for CALL when the destination address didn't exist prior.
 	TxGas                 uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
@@ -82,7 +82,7 @@ const (
 	CallCreateDepth       uint64 = 1024  // Maximum depth of call/create stack.
 	ExpGas                uint64 = 10    // Once per EXP instruction
 	LogGas                uint64 = 375   // Per LOG* operation.
-	CopyGas               uint64 = 3     //
+	CopyGas               uint64 = 3     //	Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
 	StackLimit            uint64 = 1024  // Maximum size of VM stack allowed.
 	TierStepGas           uint64 = 0     // Once per operation, for a selection of them.
 	LogTopicGas           uint64 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.