diff --git a/application/helpers/qanda_helper.php b/application/helpers/qanda_helper.php
index 28d8fa731f9..ab92285094b 100644
--- a/application/helpers/qanda_helper.php
+++ b/application/helpers/qanda_helper.php
@@ -2404,7 +2404,7 @@ function do_multiplechoice($ia)
         $answer .="<script type='text/javascript'>\n";
         $answer .="$('#answer{$myfname}cbox').css('visibility','');";
         $answer .="$('#answer{$myfname}').bind('keyup focusout',function(event){\n";
-        $answer .= " if ($.trim($(this).val()).length>0) { $(\"#answer{$myfname}cbox\").attr(\"checked\",true); } else { \$(\"#answer{$myfname}cbox\").attr(\"checked\",false); }; $(\"#java{$myfname}\").val($(this).val());LEMflagMandOther(\"$myfname\",$('#answer{$myfname}cbox').is(\":checked\")); $oth_checkconditionFunction(this.value, this.name, this.type); \n";
+        $answer .= " if ($.trim($(this).val()).length>0) { $(\"#answer{$myfname}cbox\").prop(\"checked\",true); } else { \$(\"#answer{$myfname}cbox\").prop(\"checked\",false); }; $(\"#java{$myfname}\").val($(this).val());LEMflagMandOther(\"$myfname\",$('#answer{$myfname}cbox').is(\":checked\")); $oth_checkconditionFunction(this.value, this.name, this.type); \n";
         $answer .="});\n";
         $answer .="$('#answer{$myfname}cbox').click(function(event){\n";
         $answer .= " //if (($(this)).is(':checked')) { $(\"#answer{$myfname}\").focus(); } else { $(\"#answer{$myfname}\").val('');{$checkconditionFunction}(\"\", \"{$myfname}\", \"text\"); }; return true;\n";