diff --git a/doc/emacs/trouble.texi b/doc/emacs/trouble.texi
index 60b5cc7602b..027086cab50 100644
--- a/doc/emacs/trouble.texi
+++ b/doc/emacs/trouble.texi
@@ -393,7 +393,7 @@ this---saving them---updates the files themselves.
 associated with any files, or if the autosave was not recent enough to
 have recorded important changes, you can use the
 @file{etc/emacs-buffer.gdb} script with GDB (the GNU Debugger) to
-retrieve them from a core dump--provided that a core dump was saved,
+retrieve them from a core dump---provided that a core dump was saved,
 and that the Emacs executable was not stripped of its debugging
 symbols.