diff --git a/sane/gb_json.cpp b/sane/gb_json.cpp
index 6d4dd91..5fc5c90 100644
--- a/sane/gb_json.cpp
+++ b/sane/gb_json.cpp
@@ -559,8 +559,16 @@ namespace gb
 
         if(ele)
         {
-            if(addr)
-                *addr = NULL;
+            //if(addr)
+            //    *addr = ele->next;
+            if (cur_child_ == ele)
+                cur_child_ = ele->prev;
+            if (ele->prev)
+                ele->prev->next = ele->next;
+            if (ele->next)
+                ele->next->prev = ele->prev;
+            ele->prev = NULL;
+            ele->next = NULL;
             cJSON_Delete(ele);
 
             return true;