diff --git a/src/event.rs b/src/event.rs
index dae4de79be..7bf2880dfa 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -4,7 +4,7 @@
 use bincode::serialize;
 use chrono::prelude::*;
 use hash::Hash;
-use signature::{KeyPair, KeyPairUtil, PublicKey, Signature, SignatureUtil};
+use signature::{KeyPair, PublicKey, Signature, SignatureUtil};
 use transaction::Transaction;
 
 #[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
@@ -34,24 +34,15 @@ impl Event {
     }
 
     /// Create and sign a new Witness Timestamp. Used for unit-testing.
-    pub fn new_timestamp(from: &KeyPair, dt: DateTime<Utc>, _last_id: Hash) -> Self {
-        let sign_data = serialize(&dt).expect("serialize 'dt' in pub fn new_timestamp");
-        let sig = Signature::clone_from_slice(from.sign(&sign_data).as_ref());
-        Event::Timestamp {
-            from: from.pubkey(),
-            dt,
-            sig,
-        }
+    pub fn new_timestamp(from: &KeyPair, dt: DateTime<Utc>, last_id: Hash) -> Self {
+        let tr = Transaction::new_timestamp(from, dt, last_id);
+        Event::Transaction(tr)
     }
 
     /// Create and sign a new Witness Signature. Used for unit-testing.
-    pub fn new_signature(from: &KeyPair, tx_sig: Signature, _last_id: Hash) -> Self {
-        let sig = Signature::clone_from_slice(from.sign(&tx_sig).as_ref());
-        Event::Signature {
-            from: from.pubkey(),
-            tx_sig,
-            sig,
-        }
+    pub fn new_signature(from: &KeyPair, tx_sig: Signature, last_id: Hash) -> Self {
+        let tr = Transaction::new_signature(from, tx_sig, last_id);
+        Event::Transaction(tr)
     }
 
     /// Verify the Event's signature's are valid and if a transaction, that its
diff --git a/src/tvu.rs b/src/tvu.rs
index be5a610c52..836086b9eb 100644
--- a/src/tvu.rs
+++ b/src/tvu.rs
@@ -154,7 +154,6 @@ pub fn test_node() -> (ReplicatedData, UdpSocket, UdpSocket, UdpSocket, UdpSocke
 pub mod tests {
     use bank::Bank;
     use bincode::serialize;
-    use chrono::prelude::*;
     use crdt::Crdt;
     use crdt::ReplicatedData;
     use entry::Entry;
@@ -249,8 +248,7 @@ pub mod tests {
             w.set_index(i).unwrap();
             w.set_id(leader_id).unwrap();
 
-            let tr0 = Event::new_timestamp(&bob_keypair, Utc::now(), cur_hash);
-            let entry0 = Entry::new(&cur_hash, i, vec![tr0]);
+            let entry0 = Entry::new(&cur_hash, i, vec![]);
             bank.register_entry_id(&cur_hash);
             cur_hash = hash(&cur_hash);