diff --git a/objtoobj.go b/objtoobj.go
index 2f8e32a..8a72ae8 100644
--- a/objtoobj.go
+++ b/objtoobj.go
@@ -275,7 +275,7 @@ func StrArrayToJsonStr(a string) string {
 			a = Substr(a, 1, len(a)-1)
 		}
 		if a[len(a)-1] == ',' {
-			a = Substr(a, 1, len(a)-2)
+			a = Substr(a, 0, len(a)-1)
 		}
 		//a = strings.Replace(a, ",", `,`, -1)
 		a = `[` + a + `]`