diff --git a/ethcore/evm/src/lib.rs b/ethcore/evm/src/lib.rs
index ca101fcb4..5c073add6 100644
--- a/ethcore/evm/src/lib.rs
+++ b/ethcore/evm/src/lib.rs
@@ -28,7 +28,7 @@ extern crate memory_cache;
 #[macro_use]
 extern crate lazy_static;
 
-#[macro_use]
+#[cfg_attr(feature = "evm-debug", macro_use)]
 extern crate log;
 
 #[cfg(feature = "jit")]
diff --git a/parity/cli/mod.rs b/parity/cli/mod.rs
index 445e75d1b..66fe2fcb0 100644
--- a/parity/cli/mod.rs
+++ b/parity/cli/mod.rs
@@ -994,6 +994,7 @@ struct Config {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Operating {
 	mode: Option<String>,
 	mode_timeout: Option<u64>,
@@ -1013,6 +1014,7 @@ struct Operating {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Account {
 	unlock: Option<Vec<String>>,
 	password: Option<Vec<String>>,
@@ -1023,6 +1025,7 @@ struct Account {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ui {
 	force: Option<bool>,
 	disable: Option<bool>,
@@ -1033,6 +1036,7 @@ struct Ui {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Network {
 	warp: Option<bool>,
 	port: Option<u16>,
@@ -1052,6 +1056,7 @@ struct Network {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Rpc {
 	disable: Option<bool>,
 	port: Option<u16>,
@@ -1064,6 +1069,7 @@ struct Rpc {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ws {
 	disable: Option<bool>,
 	port: Option<u16>,
@@ -1074,6 +1080,7 @@ struct Ws {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ipc {
 	disable: Option<bool>,
 	path: Option<String>,
@@ -1081,6 +1088,7 @@ struct Ipc {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Dapps {
 	disable: Option<bool>,
 	port: Option<u16>,
@@ -1093,6 +1101,7 @@ struct Dapps {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct SecretStore {
 	disable: Option<bool>,
 	disable_http: Option<bool>,
@@ -1109,6 +1118,7 @@ struct SecretStore {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ipfs {
 	enable: Option<bool>,
 	port: Option<u16>,
@@ -1118,6 +1128,7 @@ struct Ipfs {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Mining {
 	author: Option<String>,
 	engine_signer: Option<String>,
@@ -1150,6 +1161,7 @@ struct Mining {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Stratum {
 	interface: Option<String>,
 	port: Option<u16>,
@@ -1157,6 +1169,7 @@ struct Stratum {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Footprint {
 	tracing: Option<String>,
 	pruning: Option<String>,
@@ -1175,16 +1188,19 @@ struct Footprint {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Snapshots {
 	disable_periodic: Option<bool>,
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct VM {
 	jit: Option<bool>,
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Misc {
 	ntp_servers: Option<Vec<String>>,
 	logging: Option<String>,
@@ -1195,6 +1211,7 @@ struct Misc {
 }
 
 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Whisper {
 	enabled: Option<bool>,
 	pool_size: Option<usize>,
@@ -1642,11 +1659,17 @@ mod tests {
 		let config1 = Args::parse_config(include_str!("./tests/config.invalid1.toml"));
 		let config2 = Args::parse_config(include_str!("./tests/config.invalid2.toml"));
 		let config3 = Args::parse_config(include_str!("./tests/config.invalid3.toml"));
+		let config4 = Args::parse_config(include_str!("./tests/config.invalid4.toml"));
 
-		match (config1, config2, config3) {
-			(Err(ArgsError::Decode(_)), Err(ArgsError::Decode(_)), Err(ArgsError::Decode(_))) => {},
-			(a, b, c) => {
-				assert!(false, "Got invalid error types: {:?}, {:?}, {:?}", a, b, c);
+		match (config1, config2, config3, config4) {
+			(
+				Err(ArgsError::Decode(_)),
+				Err(ArgsError::Decode(_)),
+				Err(ArgsError::Decode(_)),
+				Err(ArgsError::Decode(_)),
+			) => {},
+			(a, b, c, d) => {
+				assert!(false, "Got invalid error types: {:?}, {:?}, {:?}, {:?}", a, b, c, d);
 			}
 		}
 	}
diff --git a/parity/cli/tests/config.invalid4.toml b/parity/cli/tests/config.invalid4.toml
new file mode 100644
index 000000000..a5429b2ba
--- /dev/null
+++ b/parity/cli/tests/config.invalid4.toml
@@ -0,0 +1,2 @@
+[account]
+invalid = 5