diff --git a/Source/Processes/AuOpen.Win32.cpp b/Source/Processes/AuOpen.Win32.cpp
index dee81fd6..61ffb017 100644
--- a/Source/Processes/AuOpen.Win32.cpp
+++ b/Source/Processes/AuOpen.Win32.cpp
@@ -123,6 +123,10 @@ namespace Aurora::Processes
 
     void DeinitWin32Opener()
     {
+        if (!gOpenerThread)
+        {
+            return;
+        }
         gOpenerThread->SendExitSignal();
         gCondVariable->Signal();
         gOpenerThread.reset();