diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 73c3075032..ade1799b06 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,7 @@
+2018-06-14  Tom de Vries  <tdevries@suse.de>
+
+	* gdb.texinfo (Background Execution): Add @cindex for '&'.
+
 2018-06-11  Eli Zaretskii  <eliz@gnu.org>
 
 	* gdb.texinfo (Maintenance Commands): Add a missing @anchor.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 2b56b5ab21..d5d5fce46c 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -6319,6 +6319,7 @@ a command prompt so that you can issue other commands while your program runs.
 If the target doesn't support async mode, @value{GDBN} issues an error
 message if you attempt to use the background execution commands.
 
+@cindex @code{&}
 To specify background execution, add a @code{&} to the command.  For example,
 the background form of the @code{continue} command is @code{continue&}, or
 just @code{c&}.  The execution commands that accept background execution