diff --git a/twofish.h b/twofish.h
index 5ebc2440..f6d75ca8 100644
--- a/twofish.h
+++ b/twofish.h
@@ -13,7 +13,7 @@ NAMESPACE_BEGIN(CryptoPP)
 
 //! \class Twofish_Info
 //! \brief Twofish block cipher information
-struct Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 32>, FixedRounds<16>
+struct Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, FixedRounds<16>
 {
 	static const char *StaticAlgorithmName() {return "Twofish";}
 };