diff --git a/share/completions/git.fish b/share/completions/git.fish
index 138b2c4a5..d4b9fcf34 100644
--- a/share/completions/git.fish
+++ b/share/completions/git.fish
@@ -53,7 +53,7 @@ function __fish_git_using_command
     end
 
     # aliased command
-    set -l aliased (command git config --get "alias.$cmd[2]" | sed 's/ .*$//')
+    set -l aliased (command git config --get "alias.$cmd[2]" ^ /dev/null | sed 's/ .*$//')
     if [ $argv[1] = "$aliased" ]
       return 0
     end