diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index e3ddecc995eb30391639983d9f6f0db7567d7b9a..a0917d18095f63abd1935be33e8fbcdfb6b2b6fa 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1224,7 +1224,7 @@ _git_log ()
 
 __git_merge_options="
 	--no-commit --no-stat --log --no-log --squash --strategy
-	--commit --stat --no-squash --ff --no-ff
+	--commit --stat --no-squash --ff --no-ff --ff-only
 "
 
 _git_merge ()