diff --git a/s4-funcs.sh b/s4-funcs.sh
index 11e0571..016b65e 100755
--- a/s4-funcs.sh
+++ b/s4-funcs.sh
@@ -55,7 +55,7 @@
   *i[Pp]hone*|*[Aa]ndroid*)	touchpanel=1 ;;
   *)				touchpanel="" ;;
 esac
-. ./s4-cgi.sh
+[ -f ./s4-cgi.sh ] && . ./s4-cgi.sh
 
 : <<EOF