diff --git a/.config/zsh/.zshrc b/.config/zsh/.zshrc
index db1b269..216d1ae 100644
--- a/.config/zsh/.zshrc
+++ b/.config/zsh/.zshrc
@@ -17,7 +17,7 @@ SAVEHIST=999999
 exists() { which $@ 0<&- 1>/dev/null 2>/dev/null; }
 
 # Only set tty if running interactively
-if exists tty && tty -s; then
+if exists tty && tty -s 1>/dev/null 2>/dev/null; then
     # Resolve at shell runtime
     export GPG_TTY="$(tty)"
 fi