diff --git a/examples/imgui_impl_win32.cpp b/examples/imgui_impl_win32.cpp
index 230fc22..882ef80 100644
--- a/examples/imgui_impl_win32.cpp
+++ b/examples/imgui_impl_win32.cpp
@@ -411,6 +411,8 @@
 #ifndef _DPI_AWARENESS_CONTEXTS_
 DECLARE_HANDLE(DPI_AWARENESS_CONTEXT);
 #define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE    (DPI_AWARENESS_CONTEXT)-3
+#endif
+#ifndef DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2
 #define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 (DPI_AWARENESS_CONTEXT)-4
 #endif
 typedef HRESULT(WINAPI * PFN_SetProcessDpiAwareness)(PROCESS_DPI_AWARENESS);                     // Shcore.lib+dll, Windows 8.1