diff --git a/Documentation/git-filter-branch.txt b/Documentation/git-filter-branch.txt
index cfaba2a305..020028cf9a 100644
--- a/Documentation/git-filter-branch.txt
+++ b/Documentation/git-filter-branch.txt
@@ -358,7 +358,7 @@ To move the whole tree into a subdirectory, or remove it from there:
 
 ---------------------------------------------------------------
 git filter-branch --index-filter \
-	'git ls-files -s | sed "s-\t-&newsubdir/-" |
+	'git ls-files -s | sed "s-\t\"*-&newsubdir/-" |
 		GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
 			git update-index --index-info &&
 	 mv $GIT_INDEX_FILE.new $GIT_INDEX_FILE' HEAD