diff --git a/2020/kurdyukov3/README.md b/2020/kurdyukov3/README.md
index 86fee32d1..3269f3b70 100644
--- a/2020/kurdyukov3/README.md
+++ b/2020/kurdyukov3/README.md
@@ -35,7 +35,7 @@ is it a pnuch crad)?
 
 Compile and try this:
 
-cat some.input.txt | ./prog
+cat input.txt | ./prog
 
 The program can work with letters that are not represented in English, as long as these letters are encoded in the higher part of the single-byte character set (use `iconv` to convert from UTF-8 and back).