diff --git a/srcs/libs/misc/unique_instance.c b/srcs/libs/misc/unique_instance.c
index 6ca88b8..cbaa38e 100644
--- a/srcs/libs/misc/unique_instance.c
+++ b/srcs/libs/misc/unique_instance.c
@@ -5,7 +5,6 @@
 #include <sys/file.h>
 #include <errno.h>
 #include <unistd.h>
-#include <stdio.h>
 #include <string.h>
 #include "user_errno.h"
 #include "misc.h"
diff --git a/srcs/opendhcp183/query.cpp b/srcs/opendhcp183/query.cpp
index 69467c9..77c5c9f 100644
--- a/srcs/opendhcp183/query.cpp
+++ b/srcs/opendhcp183/query.cpp
@@ -550,30 +550,27 @@ static int delete_dhcpd_rangeset(const char **pRsp, const char *pRequest) {
         }
     }
     //The input parameter does not exist
-    do {
-        PHASH_MAP s;
-        PHASH_MAP tmp;
-        char      saddr[128];
-        char      eaddr[128];
-        char      del_range[256];
-        memset(del_range, 0, 256);
+    PHASH_MAP s;
+    PHASH_MAP tmp;
+    char      saddr[128];
+    char      eaddr[128];
+    char      del_range[256];
+    memset(del_range, 0, 256);
+    HASH_ITER(hh, delMap, s, tmp) HASH_ITER(hh, delMap, s, tmp) {
+        cJSON *pdel_Item = cJSON_CreateObject();
+        IP2String(saddr, ntohl(s->key));
+        IP2String(eaddr, ntohl(s->value));
 
-        HASH_ITER(hh, delMap, s, tmp) {
-            cJSON *pdel_Item = cJSON_CreateObject();
-            IP2String(saddr, ntohl(s->key));
-            IP2String(eaddr, ntohl(s->value));
+        sprintf(del_range, "%s-%s", saddr, eaddr);
+        cJSON_AddStringToObject(pdel_Item, "dhcpRange", del_range);
 
-            sprintf(del_range, "%s-%s", saddr, eaddr);
-            cJSON_AddStringToObject(pdel_Item, "dhcpRange", del_range);
+        cJSON_AddNumberToObject(pdel_Item, "status", ERR_ITEM_UNEXISTS);
+        cJSON_AddStringToObject(pdel_Item, "message", getErrorEnumDesc(ERR_ITEM_UNEXISTS));
+        cJSON_AddItemToArray(pdelArray, pdel_Item);
 
-            cJSON_AddNumberToObject(pdel_Item, "status", ERR_ITEM_UNEXISTS);
-            cJSON_AddStringToObject(pdel_Item, "message", getErrorEnumDesc(ERR_ITEM_UNEXISTS));
-            cJSON_AddItemToArray(pdelArray, pdel_Item);
-
-            HASH_DEL(delMap, s);
-            free(s);
-        }
-    } while (0);
+        HASH_DEL(delMap, s);
+        free(s);
+    }
 
     //Rewrite cfig.dhcpRanges
     for (int i = 0; i < cfig.rangeCount; i++) {