diff --git a/src/account.rs b/src/account.rs
index 26de0d0..08778b3 100644
--- a/src/account.rs
+++ b/src/account.rs
@@ -83,7 +83,7 @@ impl Account {
         if !is_valid_amount(amount) {
             Err(InvalidTransaction("withdrawal amount must be a positive number".into()))
         } else if amount > self.available {
-            Err(FailedTransaction("withdrawal failed: insufficient funds".into()))
+            Err(FailedTransaction("withdrawal failed because of insufficient funds".into()))
         } else {
             self.available -= amount;
             self.total -= amount;
diff --git a/src/account_activity.rs b/src/account_activity.rs
index ab0f225..63d7b47 100644
--- a/src/account_activity.rs
+++ b/src/account_activity.rs
@@ -1,6 +1,7 @@
 use crate::dispute::DisputeCase;
 use crate::transaction::{Transaction, TransactionID};
 use crate::ClientID;
+use std::fmt::{Display, Formatter};
 use thiserror::Error;
 
 #[derive(Error, Debug)]
@@ -117,3 +118,16 @@ impl AccountActivity {
         }
     }
 }
+
+impl Display for AccountActivity {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let kind = match self {
+            AccountActivity::Deposit(_) => "deposit",
+            AccountActivity::Withdrawal(_) => "withdrawal",
+            AccountActivity::Dispute(_) => "dispute",
+            AccountActivity::Resolve(_) => "resolve",
+            AccountActivity::Chargeback(_) => "chargeback",
+        };
+        write!(f, "{}", kind)
+    }
+}
diff --git a/src/processor.rs b/src/processor.rs
index 3523ba2..24942a9 100644
--- a/src/processor.rs
+++ b/src/processor.rs
@@ -23,15 +23,17 @@ pub trait Processor {
                 Err(err) => {
                     error!(error = ?err, "error parsing account activity record")
                 }
-                Ok(transaction) => {
+                Ok(activity) => {
                     let account = accounts
-                        .entry(transaction.client_id())
-                        .or_insert_with(|| Account::new(transaction.client_id()));
-                    if let Err(err) = account.transaction(transaction) {
+                        .entry(activity.client_id())
+                        .or_insert_with(|| Account::new(activity.client_id()));
+                    if let Err(err) = account.transaction(activity) {
                         warn!(
-                            transaction.id = %transaction.transaction_id(),
-                            client.id = %transaction.client_id(),
-                            "error processing account activity: {}",err
+                            activity = %activity,
+                            transaction.id = %activity.transaction_id(),
+                            client.id = %activity.client_id(),
+                            error = ?err,
+                            "error processing account activity",
                         );
                     }
                 }