diff --git a/internal/intlog/intlog.go b/internal/intlog/intlog.go
index 4edf5c2ab..f2675ce91 100644
--- a/internal/intlog/intlog.go
+++ b/internal/intlog/intlog.go
@@ -37,11 +37,6 @@ func SetEnabled(enabled bool) {
 	}
 }
 
-// IsEnabled checks and returns whether current process is in GF development.
-func IsEnabled() bool {
-	return isGFDebug
-}
-
 // Print prints `v` with newline using fmt.Println.
 // The parameter `v` can be multiple variables.
 func Print(v ...interface{}) {
diff --git a/os/gcfg/gcfg.go b/os/gcfg/gcfg.go
index 423b382df..ff3f7a34d 100644
--- a/os/gcfg/gcfg.go
+++ b/os/gcfg/gcfg.go
@@ -409,13 +409,12 @@ func (c *Config) getJson(file ...string) *gjson.Json {
 				}
 			}
 			return j
-		} else {
-			if errorPrint() {
-				if filePath != "" {
-					glog.Criticalf(`[gcfg] Load config file "%s" failed: %s`, filePath, err.Error())
-				} else {
-					glog.Criticalf(`[gcfg] Load configuration failed: %s`, err.Error())
-				}
+		}
+		if errorPrint() {
+			if filePath != "" {
+				glog.Criticalf(`[gcfg] Load config file "%s" failed: %s`, filePath, err.Error())
+			} else {
+				glog.Criticalf(`[gcfg] Load configuration failed: %s`, err.Error())
 			}
 		}
 		return nil
diff --git a/os/gfsnotify/gfsnotify_watcher.go b/os/gfsnotify/gfsnotify_watcher.go
index 421b40a59..0088bfaad 100644
--- a/os/gfsnotify/gfsnotify_watcher.go
+++ b/os/gfsnotify/gfsnotify_watcher.go
@@ -47,7 +47,8 @@ func (w *Watcher) AddOnce(name, path string, callbackFunc func(event *Event), re
 					if err := w.watcher.Add(subPath); err != nil {
 						intlog.Error(err)
 					} else {
-						intlog.Printf("watcher adds monitor for: %s", subPath)
+						// It uses `Errorf` as it needs trace stack information here.
+						intlog.Errorf("watcher adds monitor for: %s", subPath)
 					}
 				}
 			}