diff --git a/obj.go b/obj.go
index c0463f0..32ae248 100644
--- a/obj.go
+++ b/obj.go
@@ -27,9 +27,10 @@ var (
 )
 
 func initCache() {
+	var err error
 
 	resetMsgParsingRules()
-	msgParsingRules, err := loadMsgParsingRules()
+	msgParsingRules, err = loadMsgParsingRules()
 	logOnError(err, "initCache : message parsing rules")
 
 	err = loadObjCastle()