diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 1c35eef56a..1b4b0f95a9 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1294,7 +1294,7 @@ _git_difftool ()
 		return
 		;;
 	esac
-	__git_complete_file
+	__git_complete_revlist_file
 }
 
 __git_fetch_options="