1 files changed, 1 insertions, 1 deletions
diff --git a/js/lex.js b/js/lex.js
index eb58753..641fd2e 100644
--- a/js/lex.js
+++ b/js/lex.js
@@ -44,7 +44,7 @@ Lex.prototype.mirc = function(){
   if (fgOnly) {
     return "\x03" + (this.fg&15) + char
   }
-  if ((this.bg&15) < 10 && parseInt(char)) {
+  if ((this.bg&15) < 10 && ! isNaN(parseInt(char))) {
     return "\x03" + (this.fg&15) + ",0" + (this.bg&15) + char
   }
   else {