diff --git a/inc/dllmain.h b/inc/dllmain.h
index 176d72a..f7e028b 100644
--- a/inc/dllmain.h
+++ b/inc/dllmain.h
@@ -29,4 +29,8 @@ typedef HRESULT(__stdcall* SETPROCESSDPIAWERENESSPROC)(PROCESS_DPI_AWARENESS);
 typedef BOOL(__stdcall* SETPROCESSDPIAWAREPROC)();
 typedef BOOL(__stdcall* SETPROCESSDPIAWARENESSCONTEXTPROC)(DPI_AWARENESS_CONTEXT);
 
+#if (_WIN32_WINNT < _WIN32_WINNT_WINXP)
+#define SetThreadExecutionState(a) 
+#endif
+
 #endif