diff --git a/runtime/doc/tags b/runtime/doc/tags
index 918e767..13baf8f 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -4483,6 +4483,7 @@
 E1388	vim9class.txt	/*E1388*
 E1389	vim9class.txt	/*E1389*
 E139	message.txt	/*E139*
+E1390	vim9class.txt	/*E1390*
 E140	message.txt	/*E140*
 E1400	builtin.txt	/*E1400*
 E1401	builtin.txt	/*E1401*
diff --git a/runtime/doc/vim9class.txt b/runtime/doc/vim9class.txt
index b230cb8..7b9f8b4 100644
--- a/runtime/doc/vim9class.txt
+++ b/runtime/doc/vim9class.txt
@@ -216,7 +216,8 @@
 	      this.col = col
 	   enddef
 	 endclass
-
+<
+							*E1390*
 Not only is this text you need to write, it also has the type of each
 variables twice.  Since this is so common a shorter way to write new() is
 provided: >