diff --git a/lexer.go b/lexer.go
index e206f6a..2010973 100644
--- a/lexer.go
+++ b/lexer.go
@@ -3,10 +3,11 @@ package wikilink
 
 import (
 	"fmt"
-	"log"
 	"strings"
 	// "unicode"
 	"unicode/utf8"
+
+	"go.uber.org/zap"
 )
 
 const (
@@ -35,6 +36,7 @@ const (
 
 func Lex(name, input string) *Lexer {
 	l := &Lexer{
+		L:     zap.NewExample().Sugar().Named("lexer"),
 		name:  name,
 		input: input,
 		state: lexText,
@@ -72,6 +74,7 @@ func (l *Lexer) backup() {
 }
 
 type Lexer struct {
+	L                 *zap.SugaredLogger
 	name, input       string
 	start, pos, width int
 	state             stateFn
@@ -103,18 +106,29 @@ func (l *Lexer) acceptRun(valid string) {
 
 func (l *Lexer) emit(t ItemType) {
 	i := Item{t, l.input[l.start:l.pos]}
-	log.Printf("emitting Item: %s\n", i.String())
+	L := l.L.With(
+		zap.Int("pos", l.pos),
+		zap.Int("width", l.width),
+	).Named("emit")
+
+	L.Debugw("emitting item",
+		zap.String("item", i.String()),
+	)
 	l.items <- i
 	l.start = l.pos
 }
 
 func (l *Lexer) errorf(format string, args ...interface{}) stateFn {
-	log.Printf("entering errorf: %q\n", format)
-	l.items <- Item{
+	L := l.L.Named("errorf")
+	errorItem := Item{
 		ItemError,
 		fmt.Sprintf(format, args...),
 	}
+	L.Debugw("emitting errorItem",
+		zap.String("error", errorItem.String()),
+	)
 
+	l.items <- errorItem
 	return nil
 }
 
diff --git a/lexer_test.go b/lexer_test.go
index 8c0fa3e..ad7042a 100644
--- a/lexer_test.go
+++ b/lexer_test.go
@@ -93,6 +93,7 @@ func Test_Lexer(t *testing.T) {
 		t.Run(tc.name, func(t *testing.T) {
 			// t.Parallel()
 			l := wikilink.Lex("testLexer", tc.in)
+			defer l.L.Sync()
 			for _, e := range tc.expected {
 				n := l.NextItem()
 				if e.Typ != n.Typ {