diff --git a/README.md b/README.md
index c600dc3..aab715a 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ To fix this issue, I present:
 Meuro's worth is equivalent to that of the euro on January 1st 2001 00:00 GMT.  
 (Yes, thats 2001 and not 2000 because the first millenium started in the year 1 and so the third one started in 2001. I do realize that this is stupid, but that's not my fault and all the people that celebrated the beginning of the new century at silvester 2000 should technically have waited another year.)  
 ## This repo
-What you find in this repo is a small python-libary that connects to the ecb to get historic inflation-data and computes the conversion-factor between € and µ for any given date (after Jan 1st 2001).  
+What you find in this repo is a small python-libary that connects to the ecb to get historic inflation-data and computes the conversion-factor between € and µ for any given date after Jan 1st 2001 (cli-interface only orks before Jan 1st 10000).  
 ## Usage
 You probably want to use this tool using the cli-interface which tries to understand requests in human language.  
 ### Examples: