diff --git a/core/vm/evm.go b/core/vm/evm.go
index 63c09a4a30..0cc0d9a485 100644
--- a/core/vm/evm.go
+++ b/core/vm/evm.go
@@ -38,6 +38,10 @@ type (
 	// GetHashFunc returns the n'th block hash in the blockchain
 	// and is used by the BLOCKHASH EVM op code.
 	GetHashFunc func(uint64) common.Hash
+	// SYSCOIN
+	ReadSYSHashFunc  func(uint64) []byte
+	ReadDataHashFunc func(common.Hash) []byte
+	GetNEVMAddressFunc func(common.Address) []byte
 )
 
 func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) {