diff --git a/Documentation/config.txt b/Documentation/config.txt
index 02696208c9..86b2435667 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -2351,7 +2351,7 @@ rebase.missingCommitsCheck::
 	command in the todo-list.
 	Defaults to "ignore".
 
-rebase.instructionFormat
+rebase.instructionFormat::
 	A format string, as specified in linkgit:git-log[1], to be used for
 	the instruction list during an interactive rebase.  The format will automatically
 	have the long commit hash prepended to the format.