diff --git a/source/mijin/debug/stacktrace.cpp b/source/mijin/debug/stacktrace.cpp
index 36f9fab..3936caf 100644
--- a/source/mijin/debug/stacktrace.cpp
+++ b/source/mijin/debug/stacktrace.cpp
@@ -54,7 +54,7 @@ void backtraceErrorCallback(void* data, const char* msg, int /* errnum */)
     btData.error = msg;
 }
 
-backtrace_state* gBacktraceState = nullptr;
+thread_local backtrace_state* gBacktraceState = nullptr;
 } // namespace
 
 //