diff --git a/hooks.go b/hooks.go
index 8b3eeb5..113e592 100644
--- a/hooks.go
+++ b/hooks.go
@@ -4,6 +4,7 @@ import (
 	"io/fs"
 	"log"
 	"runtime"
+	"strings"
 	"sync"
 	"sync/atomic"
 )
@@ -68,10 +69,24 @@ func dispatchMissingKey(key string, args map[string]any) {
 	if !ok || h == nil {
 		return
 	}
-	_, file, line, ok := runtime.Caller(2)
-	if !ok {
-		file = "unknown"
-		line = 0
-	}
+	file, line := missingKeyCaller()
 	h(MissingKey{Key: key, Args: args, CallerFile: file, CallerLine: line})
 }
+
+func missingKeyCaller() (string, int) {
+	const packagePrefix = "dappco.re/go/core/i18n."
+
+	pcs := make([]uintptr, 16)
+	n := runtime.Callers(2, pcs)
+	frames := runtime.CallersFrames(pcs[:n])
+	for {
+		frame, more := frames.Next()
+		if !strings.HasPrefix(frame.Function, packagePrefix) || strings.HasSuffix(frame.File, "_test.go") {
+			return frame.File, frame.Line
+		}
+		if !more {
+			break
+		}
+	}
+	return "unknown", 0
+}
diff --git a/hooks_test.go b/hooks_test.go
index 52f0e6b..0fa6355 100644
--- a/hooks_test.go
+++ b/hooks_test.go
@@ -1,6 +1,7 @@
 package i18n
 
 import (
+	"path/filepath"
 	"sync"
 	"testing"
 	"testing/fstest"
@@ -188,6 +189,11 @@ func TestLoadRegisteredLocales_Good(t *testing.T) {
 func TestOnMissingKey_Good(t *testing.T) {
 	svc, err := New()
 	require.NoError(t, err)
+	prev := Default()
+	SetDefault(svc)
+	t.Cleanup(func() {
+		SetDefault(prev)
+	})
 	svc.SetMode(ModeCollect)
 
 	var captured MissingKey
@@ -195,11 +201,11 @@ func TestOnMissingKey_Good(t *testing.T) {
 		captured = m
 	})
 
-	_ = svc.T("missing.test.key", map[string]any{"foo": "bar"})
+	_ = T("missing.test.key", map[string]any{"foo": "bar"})
 
 	assert.Equal(t, "missing.test.key", captured.Key)
 	assert.Equal(t, "bar", captured.Args["foo"])
-	assert.NotEmpty(t, captured.CallerFile)
+	assert.Equal(t, "hooks_test.go", filepath.Base(captured.CallerFile))
 }
 
 func TestDispatchMissingKey_Good_NoHandler(t *testing.T) {