diff --git a/webif/lib/utils b/webif/lib/utils
index 101fec5..4515c33 100644
--- a/webif/lib/utils
+++ b/webif/lib/utils
@@ -101,7 +101,7 @@ proc ::js::_unescape {str} {
 }
 
 proc ::js::escape {str} {
-	set re1 {[\;\[\]\{\}]}
+	set re1 {[\;\[\]\{\}\\]}
 	set re2 {[^A-Za-z0-9@*_+./-]+}
 	regsub -all -- $re1 $str {\\&} str1
 	regsub -all -- $re2 $str1 \