diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index baf3693..7408762 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 9.0.  Last change: 2023 Dec 05
+*syntax.txt*	For Vim version 9.0.  Last change: 2023 Dec 09
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1643,7 +1643,7 @@
 created in the last three decades.  An even longer line length of 132
 characters is allowed if you set the variable fortran_extended_line_length
 with a command such as >
-    :let fortran_line_length=1
+    :let fortran_extended_line_length=1
 placed prior to the :syntax on command.
 
 If you want additional highlighting of the CUDA Fortran extensions, you should