diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index b61c54e37f7..58ce64de9e2 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1754,7 +1754,7 @@ __git_diff_common_options="--stat --numstat --shortstat --summary
 			--submodule --submodule= --ignore-submodules
 			--indent-heuristic --no-indent-heuristic
 			--textconv --no-textconv --break-rewrites
-			--patch --no-patch --cc
+			--patch --no-patch --cc --combined-all-paths
 			--anchored=
 "