diff --git a/source/app/models/main.py b/source/app/models/main.py
index 5d234c0..8b0806c 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -2175,7 +2175,7 @@ class Alumnos(BaseModel):
 
     def _clean(self, values):
         fields = util.clean(util.loads(values))
-        fields['rfc'] = fields['rfc'].upper()
+        fields['rfc'] = fields['rfc'].upper().strip()
         fields['curp'] = fields['curp'].upper()
         fields['nombre'] = util.spaces(fields['nombre'])
         fields['paterno'] = util.spaces(fields['paterno'])
diff --git a/source/static/js/controller/school.js b/source/static/js/controller/school.js
index 5e99840..54ce754 100644
--- a/source/static/js/controller/school.js
+++ b/source/static/js/controller/school.js
@@ -107,6 +107,7 @@ function cmd_cancel_student_click(){
 
 
 function cmd_save_student_click(){
+    msg = ''
     var form = this.getFormView();
 
     if (!form.validate()) {
diff --git a/source/static/js/ui/school.js b/source/static/js/ui/school.js
index 002dfc4..9746d85 100644
--- a/source/static/js/ui/school.js
+++ b/source/static/js/ui/school.js
@@ -67,7 +67,7 @@ var student_controls_generales = [
         label: 'Apellido Materno: '},
     {cols: [
         {view: 'text', id: 'student_rfc', name: 'rfc', label: 'RFC: ',
-            required: true, invalidMessage: 'RFC inválido', adjust: 'data',
+            invalidMessage: 'RFC inválido', adjust: 'data',
             attributes: {maxlength: 13}},
         {view: 'text', id: 'student_curp', name: 'curp', label: 'CURP: ',
             required: true, invalidMessage: 'CURP inválido', adjust: 'data',
@@ -118,7 +118,6 @@ var form_student = {
         },
         rules: {
             nombre: function(value){ return value.trim() != '';},
-            rfc: validate_rfc,
             curp: validate_curp,
         }
     }]