diff --git a/runtime/doc/vim9class.txt b/runtime/doc/vim9class.txt
index 91d9e5e..505cbe6 100644
--- a/runtime/doc/vim9class.txt
+++ b/runtime/doc/vim9class.txt
@@ -411,6 +411,8 @@
 	   abstract static def SetColor()
 	endclass
 <
+A static method in an abstract class cannot be an abstract method.
+
 						*E1373*
 A class extending the abstract class must implement all the abstract methods.
 The signature (arguments, argument types and return type) must be exactly the