diff --git a/README.md b/README.md
index 9bffb9d..00b6ef2 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 Adds math nodes for numbers and types which do not need it. I got inspired by was_extras node.
 
+#WARNING This node is not compatible to ComfyUI-Impact-Pack which forces older antlr version.
+
 ## Quickstart
 
 1. Install [ComfyUI](https://docs.comfy.org/get_started).