diff --git a/shellinabox/vt100.jspp b/shellinabox/vt100.jspp
index cd6a90c..6cd98ca 100755
--- a/shellinabox/vt100.jspp
+++ b/shellinabox/vt100.jspp
@@ -4036,7 +4036,7 @@ VT100.prototype.doControl = function(ch) {
 /*H*/ case 0x48:
 /*f*/ case 0x66: this.gotoXaY(this.par[1] - 1, this.par[0] - 1);        break;
 /*I*/ case 0x49: this.ht(this.par[0] ? this.par[0] : 1);                break;
-/*@*/ case 0x40: this.csiAt(this.par[0]);                               break;
+/*at*/case 0x40: this.csiAt(this.par[0]);                               break;
 /*i*/ case 0x69: this.csii(this.par[0]);                                break;
 /*J*/ case 0x4A: this.csiJ(this.par[0]);                                break;
 /*K*/ case 0x4B: this.csiK(this.par[0]);                                break;
@@ -4100,7 +4100,7 @@ VT100.prototype.doControl = function(ch) {
     case ESpercent:
       this.isEsc              = ESnormal;
       switch (ch) {
-/*@*/ case 0x40: this.utfEnabled = false;                               break;
+/*at*/case 0x40: this.utfEnabled = false;                               break;
 /*G*/ case 0x47:
 /*8*/ case 0x38: this.utfEnabled = true;                                break;
       default:                                                          break;