diff --git a/misc/README.md b/misc/README.md
index 83efdda..3573a26 100644
--- a/misc/README.md
+++ b/misc/README.md
@@ -13,6 +13,8 @@ A CLI script for adding a workflow to a PNG file. Requres Pillow module (PIL). I
 ```
 python workping.py --image "/path/to/image.png" --workflow "/path/to/workflow.json"
 ```
+* note
+  * both comfy and a111 use pillow, but it may not be installed globally. Use the path to comfy or a111's python or a venv if pillow isn't accessable by system python. Or install from below.
 
 ### related
 * source: https://colab.research.google.com/drive/1hQMjNUdhMQ3rw1Wcm3_umvmOMeS_K4s8?usp=sharing#scrollTo=llbal5zlANoH