diff --git a/codes/c/chapter_hashing/hash_map_open_addressing.c b/codes/c/chapter_hashing/hash_map_open_addressing.c
index 55dadd85d..e4e00fb08 100644
--- a/codes/c/chapter_hashing/hash_map_open_addressing.c
+++ b/codes/c/chapter_hashing/hash_map_open_addressing.c
@@ -32,7 +32,7 @@ HashMapOpenAddressing *newHashMapOpenAddressing() {
     hashMap->capacity = 4;
     hashMap->loadThres = 2.0 / 3.0;
     hashMap->extendRatio = 2;
-    hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity);
+    hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
     hashMap->TOMBSTONE = (Pair *)malloc(sizeof(Pair));
     hashMap->TOMBSTONE->key = -1;
     hashMap->TOMBSTONE->val = "-1";
@@ -151,7 +151,7 @@ void extend(HashMapOpenAddressing *hashMap) {
     int oldCapacity = hashMap->capacity;
     // 初始化扩容后的新哈希表
     hashMap->capacity *= hashMap->extendRatio;
-    hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity);
+    hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
     hashMap->size = 0;
     // 将键值对从原哈希表搬运至新哈希表
     for (int i = 0; i < oldCapacity; i++) {
diff --git a/zh-hant/codes/c/chapter_hashing/hash_map_open_addressing.c b/zh-hant/codes/c/chapter_hashing/hash_map_open_addressing.c
index 41908868d..1df03417e 100644
--- a/zh-hant/codes/c/chapter_hashing/hash_map_open_addressing.c
+++ b/zh-hant/codes/c/chapter_hashing/hash_map_open_addressing.c
@@ -32,7 +32,7 @@ HashMapOpenAddressing *newHashMapOpenAddressing() {
     hashMap->capacity = 4;
     hashMap->loadThres = 2.0 / 3.0;
     hashMap->extendRatio = 2;
-    hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity);
+    hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
     hashMap->TOMBSTONE = (Pair *)malloc(sizeof(Pair));
     hashMap->TOMBSTONE->key = -1;
     hashMap->TOMBSTONE->val = "-1";
@@ -151,7 +151,7 @@ void extend(HashMapOpenAddressing *hashMap) {
     int oldCapacity = hashMap->capacity;
     // 初始化擴容後的新雜湊表
     hashMap->capacity *= hashMap->extendRatio;
-    hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity);
+    hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
     hashMap->size = 0;
     // 將鍵值對從原雜湊表搬運至新雜湊表
     for (int i = 0; i < oldCapacity; i++) {