diff --git a/python/sglang/srt/mem_cache/hybrid_cache/hybrid_pool_assembler.py b/python/sglang/srt/mem_cache/hybrid_cache/hybrid_pool_assembler.py
index 2d9e5ad77..401e1f547 100644
--- a/python/sglang/srt/mem_cache/hybrid_cache/hybrid_pool_assembler.py
+++ b/python/sglang/srt/mem_cache/hybrid_cache/hybrid_pool_assembler.py
@@ -918,7 +918,7 @@ def build_hybrid_mamba_swa_stack(
         mamba_pool,
         get_memory().hicache_ratio,
         mamba_host_size,
-        allocator_type=get_memory().hicache_storage_backend,
+        allocator_type=_get_allocator_type(),
         layout=get_memory().hicache_mem_layout,
     )
     entries = [
@@ -1896,7 +1896,7 @@ def build_minimax_sparse_hicache_stack(
             index_k_pool,
             kv_host_pool,
             get_memory().hicache_mem_layout,
-            allocator_type=get_memory().hicache_storage_backend,
+            allocator_type=_get_allocator_type(),
         )
         entries.append(
             build_pool_entry(