diff --git a/core/audio/misc/audio_buffer.cpp b/core/audio/misc/audio_buffer.cpp
index b25e42f..90e1aac 100644
--- a/core/audio/misc/audio_buffer.cpp
+++ b/core/audio/misc/audio_buffer.cpp
@@ -1,5 +1,7 @@
 #include "audio_buffer.h"
 
+#include <cstring>
+
 void audio_buffer::resize(uint32_t channel_num, uint32_t block_size) {
     std::scoped_lock lock(lock_);
     buffer_.resize(channel_num);
diff --git a/core/misc/singleton/singleton.h b/core/misc/singleton/singleton.h
index b9d7842..98fcb87 100644
--- a/core/misc/singleton/singleton.h
+++ b/core/misc/singleton/singleton.h
@@ -45,8 +45,8 @@ public:
 #if defined(core_EXPORTS)
 #define DEFINE_SINGLETON_INSTANCE(T) \
     inline T g_##T; \
-    extern "C" CORE_API inline T& get_##T() { return g_##T; }
+    extern "C" CORE_API inline T* get_##T() { return &g_##T; }
 #else
 #define DEFINE_SINGLETON_INSTANCE(T) \
-    extern "C" CORE_API inline T& get_##T();
+    extern "C" CORE_API inline T* get_##T();
 #endif