diff --git a/uppsrc/Core/Defs.h b/uppsrc/Core/Defs.h
index e0aac4fc9..4f24ab17a 100644
--- a/uppsrc/Core/Defs.h
+++ b/uppsrc/Core/Defs.h
@@ -236,6 +236,7 @@ __Expand40(E__NFBody)
 #undef E__TL
 #undef E__NFIf
 #undef E__NFValue
+#undef E__NFBody
 
 //$+