diff --git a/ethcore/res/authority_round.json b/ethcore/res/authority_round.json
index ad23b461f..9ab782395 100644
--- a/ethcore/res/authority_round.json
+++ b/ethcore/res/authority_round.json
@@ -21,8 +21,8 @@
 	"genesis": {
 		"seal": {
 			"generic": {
-				"fields": 1,
-				"rlp": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"
+				"fields": 2,
+				"rlp": "0x200"
 			}
 		},
 		"difficulty": "0x20000",
diff --git a/ethcore/res/instant_seal.json b/ethcore/res/instant_seal.json
index 2d5b38659..a6b24faf9 100644
--- a/ethcore/res/instant_seal.json
+++ b/ethcore/res/instant_seal.json
@@ -11,9 +11,9 @@
 	},
 	"genesis": {
 		"seal": {
-			"ethereum": {
-				"nonce": "0x00006d6f7264656e",
-				"mixHash": "0x00000000000000000000000000000000000000647572616c65787365646c6578"
+			"generic": {
+				"fields": 0,
+				"rlp": "0x0"
 			}
 		},
 		"difficulty": "0x20000",
diff --git a/ethcore/src/engines/authority_round.rs b/ethcore/src/engines/authority_round.rs
index 9bed99e8b..8bd4156d7 100644
--- a/ethcore/src/engines/authority_round.rs
+++ b/ethcore/src/engines/authority_round.rs
@@ -254,8 +254,8 @@ impl Engine for AuthorityRound {
 
 	/// Check if the signature belongs to the correct proposer.
 	fn verify_block_unordered(&self, header: &Header, _block: Option<&[u8]>) -> Result<(), Error> {
-        let header_step = try!(header_step(header));
-        // Give one step slack if step is lagging, double vote is still not possible.
+		let header_step = try!(header_step(header));
+    // Give one step slack if step is lagging, double vote is still not possible.
 		if header_step <= self.step() + 1 {
 			let proposer_signature = try!(header_signature(header));
 			let ok_sig = try!(verify_address(self.step_proposer(header_step), &proposer_signature, &header.bare_hash()));
@@ -417,13 +417,13 @@ mod tests {
 		let engine = Spec::new_test_round().engine;
 
 		let signature = tap.sign(addr, Some("0".into()), header.bare_hash()).unwrap();
-		let mut step = UNIX_EPOCH.elapsed().unwrap().as_secs();
+		let time = UNIX_EPOCH.elapsed().unwrap().as_secs();
+		// Two authorities.
+		let mut step =  time - time % 2;
 		header.set_seal(vec![encode(&step).to_vec(), encode(&(&*signature as &[u8])).to_vec()]);
-		let first_ok = engine.verify_block_seal(&header).is_ok();
+		assert!(engine.verify_block_seal(&header).is_err());
 		step = step + 1;
 		header.set_seal(vec![encode(&step).to_vec(), encode(&(&*signature as &[u8])).to_vec()]);
-		let second_ok = engine.verify_block_seal(&header).is_ok();
-
-		assert!(first_ok ^ second_ok);
+		assert!(engine.verify_block_seal(&header).is_ok());
 	}
 }