diff --git a/utils.go b/utils.go
index dfaae939..7b9376c1 100644
--- a/utils.go
+++ b/utils.go
@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"reflect"
 	"regexp"
-	"runtime"
+	"runtime/debug"
 	"strings"
 	"sync"
 	"time"
@@ -175,13 +175,7 @@ func toQueryValues(values [][]interface{}) (results []interface{}) {
 }
 
 func fileWithLineNum() string {
-	for i := 2; i < 15; i++ {
-		_, file, line, ok := runtime.Caller(i)
-		if ok && (!goSrcRegexp.MatchString(file) || goTestRegexp.MatchString(file)) {
-			return fmt.Sprintf("%v:%v", file, line)
-		}
-	}
-	return ""
+	return fmt.Sprintf("Stack trace:\n%s", debug.Stack())
 }
 
 func isBlank(value reflect.Value) bool {