1 files changed, 3 insertions, 2 deletions

diff --git a/src/common/fiber.cpp b/src/common/fiber.cpp
index 81b212e4b..177a74deb 100644
--- a/src/common/fiber.cpp
+++ b/src/common/fiber.cpp
@@ -2,9 +2,10 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <mutex>
+
 #include "common/assert.h"
 #include "common/fiber.h"
-#include "common/spin_lock.h"
 #include "common/virtual_buffer.h"
 
 #include <boost/context/detail/fcontext.hpp>
@@ -19,7 +20,7 @@ struct Fiber::FiberImpl {
     VirtualBuffer<u8> stack;
     VirtualBuffer<u8> rewind_stack;
 
-    SpinLock guard{};
+    std::mutex guard;
     std::function<void(void*)> entry_point;
     std::function<void(void*)> rewind_point;
     void* rewind_parameter{};