diff --git a/lldb/source/Host/windows/MainLoopWindows.cpp b/lldb/source/Host/windows/MainLoopWindows.cpp
index c0b10797e..e971b8cfd 100644
--- a/lldb/source/Host/windows/MainLoopWindows.cpp
+++ b/lldb/source/Host/windows/MainLoopWindows.cpp
@@ -58,7 +58,7 @@ public:
       // Keep trying to cancel ReadFile() until the thread exits.
       do {
         CancelIoEx(m_handle, /*lpOverlapped=*/NULL);
-      } while (WaitForSingleObject(m_monitor_thread.native_handle(), 1) ==
+      } while (WaitForSingleObject((HANDLE)m_monitor_thread.native_handle(), 1) ==
                WAIT_TIMEOUT);
       m_monitor_thread.join();
     }