diff --git a/document/linux/config/bash/module/tmux.sh b/document/linux/config/bash/module/tmux.sh
index a9aa54d..5903c6f 100644
--- a/document/linux/config/bash/module/tmux.sh
+++ b/document/linux/config/bash/module/tmux.sh
@@ -51,7 +51,7 @@ tka()
 # autocompletes.
 _ta()
 {
-  _autocomplete_first "$(tmux list-sessions | sed -e 's/:.*//')"
+  _autocomplete_first "$(tmux list-sessions 2> /dev/null | sed -e 's/:.*//')"
 }
 
 complete -F _ta ta tk