diff --git a/README.md b/README.md
index 6d54cf3b..b9f56cf3 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ A special *thank you* goes to our biggest <a href="doc/sponsors.md">sponsor</a>:
   <br>
   <strong>Warp, the intelligent terminal</strong>
   <br>
-  <sub>Available on MacOS, Linux, Windows</sub>
+  <sub>Available on macOS, Linux, Windows</sub>
 </a>
 
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