diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 00d729996f..06474fee13 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1812,7 +1812,7 @@ _git_config ()
 		return
 		;;
 	branch.*.rebase)
-		__gitcomp "false true"
+		__gitcomp "false true preserve interactive"
 		return
 		;;
 	remote.pushdefault)