diff --git a/src/buffer.c b/src/buffer.c
index df1f5206668..3bcd387f0c5 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5143,7 +5143,6 @@ A string is printed verbatim in the mode line except for %-constructs:
   %P -- print percent of buffer above bottom of window, perhaps plus Top,
         or print Bottom or All.
   %n -- print Narrow if appropriate.
-  %t -- visited file is text or binary (if OS supports this distinction).
   %z -- print mnemonics of keyboard, terminal, and buffer coding systems.
   %Z -- like %z, but including the end-of-line format.
   %e -- print error message about full memory.