diff --git a/imguiWrappedHeader.h b/imguiWrappedHeader.h
index 13626cc5..de2d951e 100644
--- a/imguiWrappedHeader.h
+++ b/imguiWrappedHeader.h
@@ -3,4 +3,6 @@
 // This header is for use within the wrapper sources to ensure identical inclusion
 // of the core imgui header with all the various options.
 
+#define ImDrawIdx unsigned int
+
 #include "imgui.h"