diff --git a/arch_init.c b/arch_init.c
index 8da868b..97bcc29 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -293,8 +293,7 @@ static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,

      if (!cache_is_cached(XBZRLE.cache, current_addr)) {
          if (!last_stage) {
-            cache_insert(XBZRLE.cache, current_addr,
-                         g_memdup(current_data, TARGET_PAGE_SIZE));
+            cache_insert(XBZRLE.cache, current_addr, current_data);
          }
          acct_info.xbzrle_cache_miss++;
          return -1;
diff --git a/include/migration/page_cache.h b/include/migration/page_cache.h
index 3839ac7..87894fe 100644
--- a/include/migration/page_cache.h
+++ b/include/migration/page_cache.h
@@ -57,7 +57,8 @@ bool cache_is_cached(const PageCache *cache, uint64_t addr);
  uint8_t *get_cached_data(const PageCache *cache, uint64_t addr);

  /**
- * cache_insert: insert the page into the cache. the previous value will be overwritten
+ * cache_insert: insert the page into the cache. the page cache
+ * will dup the data on insert. the previous value will be overwritten
   *
   * @cache pointer to the PageCache struct
   * @addr: page address
diff --git a/page_cache.c b/page_cache.c
index a6c3a15..e670d91 100644
--- a/page_cache.c
+++ b/page_cache.c
@@ -158,7 +158,7 @@ void cache_insert(PageCache *cache, uint64_t addr, uint8_t *pdata)
          g_free(it->it_data);
      }

-    it->it_data = pdata;
+    it->it_data = g_memdup(pdata, cache->page_size);
      it->it_age = ++cache->max_item_age;
      it->it_addr = addr;
  }