diff --git a/src/common/tools/hosts.go b/src/common/tools/hosts.go
index e7600ec9dab32a0c6206264f2d28764e1d5d9b3c..7e9997ea77b28c5b4727bcdcb48a89dd720bc9cc 100644
--- a/src/common/tools/hosts.go
+++ b/src/common/tools/hosts.go
@@ -29,7 +29,7 @@ func HostsToJson() (data map[string][]string, err error) {
 		}
 	}
 	if s.Err() != nil {
-		return nil, err
+		return nil, s.Err()
 	}
 	return data, nil
 }