diff --git a/extension/imgui_config.h b/extension/imgui_config.h
index e38ce55..d205c9d 100644
--- a/extension/imgui_config.h
+++ b/extension/imgui_config.h
@@ -72,6 +72,7 @@
 // #include "../utils.h"
 
 #include <hl.h>
+#undef _GUID
 #include "types.h"
 
 #define IM_VEC2_CLASS_EXTRA                                                 \