diff --git a/2020/kurdyukov2/README.md b/2020/kurdyukov2/README.md
index 3e54b5a6a..7f09808b9 100644
--- a/2020/kurdyukov2/README.md
+++ b/2020/kurdyukov2/README.md
@@ -59,7 +59,7 @@ And the PPM version (no additional dependencies, can read raw/ASCII PPM, writes
 
     make prog_ppm
 
-### Building on OSX
+### Building on macOS
 
 - Thanks to Cody Ferguson for this information!