diff --git a/runtime/doc/cmdline.txt b/runtime/doc/cmdline.txt
index ad862bf..0867c47 100644
--- a/runtime/doc/cmdline.txt
+++ b/runtime/doc/cmdline.txt
@@ -227,7 +227,7 @@
 		Example: >
 			:cmap <F7> <C-\>eAppendSome()<CR>
 			:func AppendSome()
-			   :let cmd = getcmdline() . " Some()"
+			   :let cmd = getcmdline() .. " Some()"
 			   :" place the cursor on the )
 			   :call setcmdpos(strlen(cmd))
 			   :return cmd