diff --git a/zsh/zshrc b/zsh/zshrc
index 99c1c50..35b8451 100644
--- a/zsh/zshrc
+++ b/zsh/zshrc
@@ -35,7 +35,7 @@ alias open-ports="ss -tulpn | grep LISTEN"
 alias yeet='yay -Rcs'
 
 # Auto-update on interactive shell start. Disable with ZSHRC_UPDATE_DISABLED=true.
-[[ -o interactive && "$ZSHRC_UPDATE_DISABLED" != "true" ]] && update_zshrc
+[[ -o interactive && "$ZSHRC_UPDATE_DISABLED" != "true" ]] && (( $+functions[update_zshrc] )) && update_zshrc
 
 [[ -f $HOME/.zshrc.local ]] || touch $HOME/.zshrc.local
 source $HOME/.zshrc.local