diff --git a/example/log.go b/example/log.go
index aaac0f1..f313ca8 100644
--- a/example/log.go
+++ b/example/log.go
@@ -16,7 +16,7 @@ func main() {
 	log.Err(ctx, "error message", 42)
 	service(ctx, log.Log())
 
-	logger := log.New(log.WithJSONFormat()).With(log.WithSource(10))
+	logger := log.New(log.WithJSONFormat()).With(log.WithSource(10, log.TrimPath))
 	logger.AlertKV(ctx, "alert message new logger", field.String("string", "value"))
 	service(ctx, logger)
 }
diff --git a/global.go b/global.go
index 5be042a..7114b45 100644
--- a/global.go
+++ b/global.go
@@ -10,7 +10,7 @@ import (
 
 //nolint:gochecknoglobals,gomnd
 var global = With(New(),
-	WithSource(2),
+	WithSource(2, TrimPath),
 	WithLevel(KeyLevel, level.Debug),
 	WithExit(level.Alert),
 	WithPanic(level.Emergency),
diff --git a/global_example_test.go b/global_example_test.go
index 5044998..79ee466 100644
--- a/global_example_test.go
+++ b/global_example_test.go
@@ -2,6 +2,7 @@ package log_test
 
 import (
 	"context"
+	"path/filepath"
 
 	"gitoa.ru/go-4devs/log"
 	"gitoa.ru/go-4devs/log/level"
@@ -9,7 +10,7 @@ import (
 
 func ExampleDebug() {
 	logger := log.New(log.WithStdout()).With(
-		log.WithSource(2),
+		log.WithSource(2, filepath.Base),
 		log.WithLevel(log.KeyLevel, level.Debug),
 		log.WithExit(level.Alert),
 		log.WithPanic(level.Emergency),
@@ -20,5 +21,5 @@ func ExampleDebug() {
 	ctx := context.Background()
 	log.Debug(ctx, "debug message")
 	// Output:
-	// msg="debug message" source=log/global_example_test.go:21 level=debug
+	// msg="debug message" source=global_example_test.go:22 level=debug
 }
diff --git a/logger_example_caller_test.go b/logger_example_caller_test.go
index 884d30c..b98a2e5 100644
--- a/logger_example_caller_test.go
+++ b/logger_example_caller_test.go
@@ -1,6 +1,8 @@
 package log_test
 
 import (
+	"path/filepath"
+
 	"gitoa.ru/go-4devs/log"
 	"gitoa.ru/go-4devs/log/level"
 )
@@ -8,14 +10,14 @@ import (
 func ExampleNew_withCaller() {
 	logger := log.New(log.WithStdout()).With(
 		log.WithLevel(log.KeyLevel, level.Debug),
-		log.WithSource(3),
+		log.WithSource(3, filepath.Base),
 	)
 	logger.Err(ctx, "same error message")
 	logger.InfoKVs(ctx, "same info message", "api-version", 0.1)
 	_, _ = logger.Write([]byte("same write message"))
 
 	// Output:
-	// msg="same error message" level=error source=log/logger_example_caller_test.go:13
-	// msg="same info message" api-version=0.1 level=info source=log/logger_example_caller_test.go:14
-	// msg="same write message" level=info source=log/logger_example_caller_test.go:15
+	// msg="same error message" level=error source=logger_example_caller_test.go:15
+	// msg="same info message" api-version=0.1 level=info source=logger_example_caller_test.go:16
+	// msg="same write message" level=info source=logger_example_caller_test.go:17
 }
diff --git a/source.go b/source.go
index caa8c8e..b033765 100644
--- a/source.go
+++ b/source.go
@@ -11,7 +11,7 @@ import (
 	"gitoa.ru/go-4devs/log/field"
 )
 
-func WithSource(items int) Middleware {
+func WithSource(items int, trimPath func(string) string) Middleware {
 	const (
 		skip       = 4
 		funcPrefix = "gitoa.ru/go-4devs/log.Logger"
@@ -59,7 +59,7 @@ func WithSource(items int) Middleware {
 	}
 }
 
-func trimPath(file string) string {
+func TrimPath(file string) string {
 	idx := strings.LastIndexByte(file, '/')
 	if idx == -1 {
 		return filepath.Base(file)
diff --git a/source_example_test.go b/source_example_test.go
index c780f3a..5af93fa 100644
--- a/source_example_test.go
+++ b/source_example_test.go
@@ -2,24 +2,25 @@ package log_test
 
 import (
 	"context"
+	"path/filepath"
 
 	"gitoa.ru/go-4devs/log"
 )
 
 func ExampleWithSource() {
 	ctx := context.Background()
-	logger := log.New(log.WithStdout()).With(log.WithSource(1))
+	logger := log.New(log.WithStdout()).With(log.WithSource(1, filepath.Base))
 
 	logger.Debug(ctx, "debug message")
 	// Output:
-	// msg="debug message" source=log/source_example_test.go:13
+	// msg="debug message" source=source_example_test.go:14
 }
 
 func ExampleWithSource_json() {
 	ctx := context.Background()
-	logger := log.New(log.WithStdout(), log.WithJSONFormat()).With(log.WithSource(2))
+	logger := log.New(log.WithStdout(), log.WithJSONFormat()).With(log.WithSource(2, filepath.Base))
 
 	logger.Debug(ctx, "debug message")
 	// Output:
-	// {"msg":"debug message","source":{"file":"log/source_example_test.go","line":22,"func":"log_test.ExampleWithSource_json"}}
+	// {"msg":"debug message","source":{"file":"source_example_test.go","line":23,"func":"log_test.ExampleWithSource_json"}}
 }