diff --git a/indra/lscript/lscript_compile/indra.l b/indra/lscript/lscript_compile/indra.l
index 715ce600a11188530b03839d95a4c4e9c4943ae1..57aef07e18446481bfffaa36d9ba81624af040ce 100644
--- a/indra/lscript/lscript_compile/indra.l
+++ b/indra/lscript/lscript_compile/indra.l
@@ -19,7 +19,7 @@ FS			(f|F)
 #include "lscript_typecheck.h"
 #include "lscript_resource.h"
 #if LL_WINDOWS
-#include "ytab.hpp"
+#include "ytab.h"
 #else
 #include "indra.y.h"
 #endif