diff --git a/src/lib.rs b/src/lib.rs
index dcf40046a..aa4f0b335 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -91,7 +91,6 @@ pub mod account;
 pub mod header;
 pub mod transaction;
 pub mod receipt;
-pub mod networkparams;
 pub mod denominations;
 pub mod null_engine;
 pub mod evm_schedule;
diff --git a/src/networkparams.rs b/src/networkparams.rs
deleted file mode 100644
index 5bf8e5a5e..000000000
--- a/src/networkparams.rs
+++ /dev/null
@@ -1,73 +0,0 @@
-use util::uint::*;
-use denominations::*;
-
-// TODO: move to params.rs.
-
-/// Network related const params
-/// TODO: make it configurable from json file
-pub struct NetworkParams {
-	maximum_extra_data_size: U256,
-	min_gas_limit: U256,
-	gas_limit_bounds_divisor: U256,
-	minimum_difficulty: U256,
-	difficulty_bound_divisor: U256,
-	duration_limit: U256,
-	block_reward: U256,
-	gas_floor_target: U256,
-	account_start_nonce: U256
-}
-
-impl NetworkParams {
-	pub fn olympic() -> NetworkParams {
-		NetworkParams {
-			maximum_extra_data_size: U256::from(1024u64),
-			min_gas_limit: U256::from(125_000u64),
-			gas_floor_target: U256::from(3_141_592u64),
-			gas_limit_bounds_divisor: U256::from(1024u64),
-			minimum_difficulty: U256::from(131_072u64),
-			difficulty_bound_divisor: U256::from(2048u64),
-			duration_limit: U256::from(8u64),
-			block_reward: finney() * U256::from(1500u64),
-			account_start_nonce: U256::from(0u64)
-		}
-	}
-
-	pub fn frontier() -> NetworkParams {
-		NetworkParams {
-			maximum_extra_data_size: U256::from(32u64),
-			min_gas_limit: U256::from(5000u64),
-			gas_floor_target: U256::from(3_141_592u64),
-			gas_limit_bounds_divisor: U256::from(1024u64),
-			minimum_difficulty: U256::from(131_072u64),
-			difficulty_bound_divisor: U256::from(2048u64),
-			duration_limit: U256::from(13u64),
-			block_reward: ether() * U256::from(5u64),
-			account_start_nonce: U256::from(0u64)
-		}
-	}
-
-	pub fn morden() -> NetworkParams {
-		NetworkParams {
-			maximum_extra_data_size: U256::from(32u64),
-			min_gas_limit: U256::from(5000u64),
-			gas_floor_target: U256::from(3_141_592u64),
-			gas_limit_bounds_divisor: U256::from(1024u64),
-			minimum_difficulty: U256::from(131_072u64),
-			difficulty_bound_divisor: U256::from(2048u64),
-			duration_limit: U256::from(13u64),
-			block_reward: ether() * U256::from(5u64),
-			account_start_nonce: U256::from(1u64) << 20
-		}
-	}
-
-	pub fn maximum_extra_data_size(&self) -> U256 { self.maximum_extra_data_size }
-	pub fn min_gas_limit(&self) -> U256 { self.min_gas_limit }
-	pub fn gas_limit_bounds_divisor(&self) -> U256 { self.gas_limit_bounds_divisor }
-	pub fn minimum_difficulty(&self) -> U256 { self.minimum_difficulty }
-	pub fn difficulty_bound_divisor(&self) -> U256 { self.difficulty_bound_divisor }
-	pub fn duration_limit(&self) -> U256 { self.duration_limit }
-	pub fn block_reward(&self) -> U256 { self.block_reward }
-	pub fn gas_floor_target(&self) -> U256 { self.gas_floor_target }
-	pub fn account_start_nonce(&self) -> U256 { self.account_start_nonce }
-}
-