diff --git a/docs/platform-known-issues.adoc b/docs/platform-known-issues.adoc
index 0d405118a..bad337477 100644
--- a/docs/platform-known-issues.adoc
+++ b/docs/platform-known-issues.adoc
@@ -55,6 +55,6 @@ which map to the binaries
 
 == MacOS
 
-* Mouse output actions is not implemented
+* Mouse output actions are not implemented
 * Mouse input processing is not implemented
 * Unicode output action is not implemented