diff --git a/Utilities/Thread.cpp b/Utilities/Thread.cpp
index f4debb4164..c79d3af673 100644
--- a/Utilities/Thread.cpp
+++ b/Utilities/Thread.cpp
@@ -1908,7 +1908,7 @@ void thread_base::start()
 #elif defined(__APPLE__)
 	pthread_attr_t stack_size_attr;
 	pthread_attr_init(&stack_size_attr);
-	pthread_attr_setstacksize(&stack_size_attr, 0x200000);
+	pthread_attr_setstacksize(&stack_size_attr, 0x800000);
 	ensure(pthread_create(reinterpret_cast<pthread_t*>(&m_thread.raw()), &stack_size_attr, entry_point, this) == 0);
 #else
 	ensure(pthread_create(reinterpret_cast<pthread_t*>(&m_thread.raw()), nullptr, entry_point, this) == 0);