diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index ccb17f4ad7..a7ae2cbe55 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2096,6 +2096,7 @@ __git_log_shortlog_options="
 # Options accepted by log and show
 __git_log_show_options="
 	--diff-merges --diff-merges= --no-diff-merges --dd --remerge-diff
+	--encoding=
 "
 
 __git_diff_merges_opts="off none on first-parent 1 separate m combined c dense-combined cc remerge r"