diff --git a/src/core.h b/src/core.h
index d1e05763..bea5d1b9 100644
--- a/src/core.h
+++ b/src/core.h
@@ -404,7 +404,6 @@ public:
 
     template<typename Stream>
     void Unserialize(Stream &s, int nType, int nVersion) {
-        unsigned int nCode = 0;
         // version
         ::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
         // header code
diff --git a/src/leveldb/table/table.cc b/src/leveldb/table/table.cc
index dbd6d3a1..71c1756e 100644
--- a/src/leveldb/table/table.cc
+++ b/src/leveldb/table/table.cc
@@ -228,7 +228,6 @@ Status Table::InternalGet(const ReadOptions& options, const Slice& k,
         !filter->KeyMayMatch(handle.offset(), k)) {
       // Not found
     } else {
-      Slice handle = iiter->value();
       Iterator* block_iter = BlockReader(this, options, iiter->value());
       block_iter->Seek(k);
       if (block_iter->Valid()) {
diff --git a/src/leveldb/util/cache.cc b/src/leveldb/util/cache.cc
index 24f1f63f..2cb5b5f0 100644
--- a/src/leveldb/util/cache.cc
+++ b/src/leveldb/util/cache.cc
@@ -116,7 +116,6 @@ class HandleTable {
       LRUHandle* h = list_[i];
       while (h != NULL) {
         LRUHandle* next = h->next_hash;
-        Slice key = h->key();
         uint32_t hash = h->hash;
         LRUHandle** ptr = &new_list[hash & (new_length - 1)];
         h->next_hash = *ptr;