diff --git a/trie/proof.go b/trie/proof.go
index fa8361eef..ef73aed2e 100644
--- a/trie/proof.go
+++ b/trie/proof.go
@@ -63,7 +63,7 @@ func (t *Trie) Prove(key []byte, fromLevel uint, proofDb ethdb.KeyValueWriter) e
 			var err error
 			tn, err = t.resolveHash(n, prefix)
 			if err != nil {
-				log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+				log.Error("Unhandled trie error in Trie.Prove", "err", err)
 				return err
 			}
 		default:
diff --git a/trie/secure_trie.go b/trie/secure_trie.go
index db44d0535..1da152477 100644
--- a/trie/secure_trie.go
+++ b/trie/secure_trie.go
@@ -17,8 +17,6 @@
 package trie
 
 import (
-	"fmt"
-
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
@@ -74,7 +72,7 @@ func NewStateTrie(owner common.Hash, root common.Hash, db *Database) (*StateTrie
 func (t *StateTrie) Get(key []byte) []byte {
 	res, err := t.TryGet(key)
 	if err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in StateTrie.Get", "err", err)
 	}
 	return res
 }
@@ -129,7 +127,7 @@ func (t *StateTrie) TryGetNode(path []byte) ([]byte, int, error) {
 // stored in the trie.
 func (t *StateTrie) Update(key, value []byte) {
 	if err := t.TryUpdate(key, value); err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in StateTrie.Update", "err", err)
 	}
 }
 
@@ -169,7 +167,7 @@ func (t *StateTrie) TryUpdateAccount(key []byte, acc *types.StateAccount) error
 // Delete removes any existing value for key from the trie.
 func (t *StateTrie) Delete(key []byte) {
 	if err := t.TryDelete(key); err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in StateTrie.Delete", "err", err)
 	}
 }
 
diff --git a/trie/stacktrie.go b/trie/stacktrie.go
index a22fa0dd6..cc50b817b 100644
--- a/trie/stacktrie.go
+++ b/trie/stacktrie.go
@@ -21,7 +21,6 @@ import (
 	"bytes"
 	"encoding/gob"
 	"errors"
-	"fmt"
 	"io"
 	"sync"
 
@@ -207,7 +206,7 @@ func (st *StackTrie) TryUpdate(key, value []byte) error {
 
 func (st *StackTrie) Update(key, value []byte) {
 	if err := st.TryUpdate(key, value); err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in StackTrie.Update", "err", err)
 	}
 }
 
diff --git a/trie/trie.go b/trie/trie.go
index 9274d8838..e5897b8d7 100644
--- a/trie/trie.go
+++ b/trie/trie.go
@@ -132,7 +132,7 @@ func (t *Trie) NodeIterator(start []byte) NodeIterator {
 func (t *Trie) Get(key []byte) []byte {
 	res, err := t.TryGet(key)
 	if err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in Trie.Get", "err", err)
 	}
 	return res
 }
@@ -269,7 +269,7 @@ func (t *Trie) tryGetNode(origNode node, path []byte, pos int) (item []byte, new
 // stored in the trie.
 func (t *Trie) Update(key, value []byte) {
 	if err := t.TryUpdate(key, value); err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in Trie.Update", "err", err)
 	}
 }
 
@@ -388,7 +388,7 @@ func (t *Trie) insert(n node, prefix, key []byte, value node) (bool, node, error
 // Delete removes any existing value for key from the trie.
 func (t *Trie) Delete(key []byte) {
 	if err := t.TryDelete(key); err != nil {
-		log.Error(fmt.Sprintf("Unhandled trie error: %v", err))
+		log.Error("Unhandled trie error in Trie.Delete", "err", err)
 	}
 }