diff --git a/ver_formulario_enviado.php b/ver_formulario_enviado.php
index e59a92a..adea505 100644
--- a/ver_formulario_enviado.php
+++ b/ver_formulario_enviado.php
@@ -1357,7 +1357,7 @@ function _mpShowCfgPanel(examName, groups) {
             var s = secs[i];
             html += '<div class="col-6 col-sm-4"><div class="mp-cfg-item form-check">'
                   + '<input class="form-check-input mp-cfg-chk" type="checkbox"'
-                  + ' id="cfg-' + s.firma + '" value="' + s.firma + '" data-group="' + gk + '" checked>'
+                  + ' id="cfg-' + s.firma + '" value="' + s.firma + '" data-group="' + gk + '">'
                   + '<label class="form-check-label small" for="cfg-' + s.firma + '">'
                   + (s.label || ('Toma ' + (i+1))) + '</label>'
                   + '</div></div>';