diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index a73055b098..71585da898 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 9.2.  Last change: 2026 Feb 14
+*eval.txt*	For Vim version 9.2.  Last change: 2026 May 15
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -5367,6 +5367,9 @@ order:
 	   is an empty string, then the type is automatically chosen.
 	2. A |list| of strings to return to Vim, each representing a line.
 
+If an invalid value is returned, then this is not an error.  Instead the
+register will be left unchanged (not cleared).
+
 						*clipboard-providers-copy*
 The "copy" callback returns nothing and takes the following arguments in the
 following order: