diff --git a/OptiScaler/hooks/wrapped_swapchain.cpp b/OptiScaler/hooks/wrapped_swapchain.cpp
index e0cd237b..6dba1b78 100644
--- a/OptiScaler/hooks/wrapped_swapchain.cpp
+++ b/OptiScaler/hooks/wrapped_swapchain.cpp
@@ -234,7 +234,7 @@ HRESULT STDMETHODCALLTYPE WrappedIDXGISwapChain4::SetFullscreenState(BOOL Fullsc
         if (Config::Instance()->FGUseMutexForSwaphain.value_or_default())
         {
 
-            if (State::Instance().currentFG->Mutex.getOwner() != 3)
+            if (State::Instance().currentFG != nullptr && State::Instance().currentFG->Mutex.getOwner() != 3)
             {
                 LOG_TRACE("Waiting ffxMutex 3, current: {}", State::Instance().currentFG->Mutex.getOwner());
                 State::Instance().currentFG->Mutex.lock(3);
@@ -320,7 +320,7 @@ HRESULT STDMETHODCALLTYPE WrappedIDXGISwapChain4::ResizeBuffers(UINT BufferCount
         OwnedLockGuard lock(_localMutex, 1);
 #endif
 
-    if (Config::Instance()->FGUseMutexForSwaphain.value_or_default())
+    if (State::Instance().currentFG != nullptr && Config::Instance()->FGUseMutexForSwaphain.value_or_default())
     {
         LOG_TRACE("Waiting ffxMutex 3, current: {}", State::Instance().currentFG->Mutex.getOwner());
         State::Instance().currentFG->Mutex.lock(3);
@@ -425,7 +425,7 @@ HRESULT STDMETHODCALLTYPE WrappedIDXGISwapChain4::ResizeBuffers(UINT BufferCount
 
     LOG_DEBUG("result: {0:X}", (UINT)result);
 
-    if (Config::Instance()->FGUseMutexForSwaphain.value_or_default())
+    if (State::Instance().currentFG != nullptr && Config::Instance()->FGUseMutexForSwaphain.value_or_default())
     {
         LOG_TRACE("Releasing ffxMutex: {}", State::Instance().currentFG->Mutex.getOwner());
         State::Instance().currentFG->Mutex.unlockThis(3);