diff --git a/.config/zsh/rc/terminal.zsh b/.config/zsh/rc/terminal.zsh
index 0f5bc1d..4926306 100644
--- a/.config/zsh/rc/terminal.zsh
+++ b/.config/zsh/rc/terminal.zsh
@@ -6,7 +6,7 @@ function {
 
     for i ( ${ZSHU_PARENTS_PID} ) ; do
         [ -r "/proc/$i/environ" ] || continue
-        x=$(sed -zEn '/^TERM=(.+)$/{s//\1/;p;}' "/proc/$i/environ")
+        x=$(sed -zEn '/^TERM=(.+)$/{s//\1/;p;}' "/proc/$i/environ" 2>/dev/null)
         [ -n "$x" ] || continue
         a+=( "$x" )
     done