diff --git a/packages/leann-backend-hnsw/CMakeLists.txt b/packages/leann-backend-hnsw/CMakeLists.txt
index 6ca6d55..87d4592 100644
--- a/packages/leann-backend-hnsw/CMakeLists.txt
+++ b/packages/leann-backend-hnsw/CMakeLists.txt
@@ -57,9 +57,16 @@ set(FAISS_ENABLE_SSE4_1 OFF CACHE BOOL "" FORCE)
 # ARM64-specific configuration
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|arm64")
     message(STATUS "Configuring Faiss for ARM64 architecture")
-    # Use SVE optimization level for ARM64 (as seen in Faiss conda build)
-    set(FAISS_OPT_LEVEL "sve" CACHE STRING "" FORCE)
-    message(STATUS "Setting FAISS_OPT_LEVEL to 'sve' for ARM64")
+
+    if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+        # Use SVE optimization level for ARM64 Linux (as seen in Faiss conda build)
+        set(FAISS_OPT_LEVEL "sve" CACHE STRING "" FORCE)
+        message(STATUS "Setting FAISS_OPT_LEVEL to 'sve' for ARM64 Linux")
+    else()
+        # Use generic optimization for other ARM64 platforms (like macOS)
+        set(FAISS_OPT_LEVEL "generic" CACHE STRING "" FORCE)
+        message(STATUS "Setting FAISS_OPT_LEVEL to 'generic' for ARM64 ${CMAKE_SYSTEM_NAME}")
+    endif()
 
     # ARM64 compatibility: Faiss submodule has been modified to fix x86 header inclusion
     message(STATUS "Using ARM64-compatible Faiss submodule")