diff --git a/sql.go b/sql.go
index 7677347..7ee443a 100644
--- a/sql.go
+++ b/sql.go
@@ -294,7 +294,7 @@ func loadMsgParsingRules() (m map[int]MessageParsingRule, err error) {
 
 	defer func() {
 		if rec := recover(); rec != nil {
-			err := errors.New(rec)
+			err = errors.New(rec)
 		}
 	}()