diff --git a/links/forms.py b/links/forms.py
index 67913f2..ae8f7c0 100644
--- a/links/forms.py
+++ b/links/forms.py
@@ -4,6 +4,8 @@ from django.utils.translation import ugettext_lazy as _
 from django.utils.html import strip_tags
 from django.core.exceptions import ValidationError
 
+import validators
+
 from subjects.models import Tag
 from subjects.forms import ParticipantsMultipleChoiceField
 
@@ -15,22 +17,22 @@ class LinkForm(forms.ModelForm):
 	MAX_UPLOAD_SIZE = 10*1024*1024
 
 	students = ParticipantsMultipleChoiceField(queryset = None, required = False)
-	
+
 	def __init__(self, *args, **kwargs):
 		super(LinkForm, self).__init__(*args, **kwargs)
 
 		self.subject = kwargs['initial'].get('subject', None)
-		
+
 		if self.instance.id:
 			self.subject = self.instance.topic.subject
 			self.initial['tags'] = ", ".join(self.instance.tags.all().values_list("name", flat = True))
-		
+
 		self.fields['students'].queryset = self.subject.students.all()
 		self.fields['groups'].queryset = self.subject.group_subject.all()
 
 	tags = forms.CharField(label = _('Tags'), required = False)
-	link_url = forms.URLField(label = _('Website URL'),required=True)
-	
+	link_url = forms.CharField(label = _('Website URL'),required=True)
+
 	class Meta:
 		model = Link
 		fields = ['name','link_url', 'brief_description', 'all_students', 'students', 'groups', 'visible']
@@ -49,13 +51,13 @@ class LinkForm(forms.ModelForm):
 
 		cleaned_data = self.cleaned_data
 
-	
+
 		return cleaned_data
-	
+
 
 	def clean_name(self):
 		name = self.cleaned_data.get('name', '')
-		
+
 		topics = self.subject.topic_subject.all()
 
 		for topic in topics:
@@ -63,7 +65,7 @@ class LinkForm(forms.ModelForm):
 				same_name = topic.resource_topic.filter(name__unaccent__iexact = name).exclude(id = self.instance.id).count()
 			else:
 				same_name = topic.resource_topic.filter(name__unaccent__iexact = name).count()
-		
+
 			if same_name > 0:
 				self._errors['name'] = [_('There is already a link with this name on this subject')]
 
@@ -72,7 +74,15 @@ class LinkForm(forms.ModelForm):
 		return name
 
 
-	
+
+	def clean_link_url(self):
+		link_url = self.cleaned_data.get('link_url','')
+		if link_url[0].lower() != "h": link_url = "https://" + link_url
+		if  validators.url(link_url) != True:
+			self._errors['link_url'] = [_('Invalid URL. It should be an valid link.')]
+			return ValueError
+
+		return link_url
 
 	def save(self, commit = True):
 		super(LinkForm, self).save(commit = True)
@@ -87,7 +97,7 @@ class LinkForm(forms.ModelForm):
 		for prev in previous_tags:
 			if not prev.name in tags:
 				self.instance.tags.remove(prev)
-        
+
 		for tag in tags:
 			tag = tag.strip()
 
@@ -101,4 +111,4 @@ class LinkForm(forms.ModelForm):
 			if not new_tag in self.instance.tags.all():
 				self.instance.tags.add(new_tag)
 
-		return self.instance
\ No newline at end of file
+		return self.instance
diff --git a/links/models.py b/links/models.py
index 659d5ea..08230cf 100644
--- a/links/models.py
+++ b/links/models.py
@@ -10,9 +10,9 @@ from django.core.urlresolvers import reverse_lazy
 
 # Create your models here.
 class Link(Resource):
-    link_url = models.URLField(verbose_name = _("Link_URL"))
-    
-   
+    link_url = models.CharField( _("Link_URL"),max_length=250 )
+
+
     class Meta:
         verbose_name = "Link"
         verbose_name_plural = "Links"
@@ -28,6 +28,6 @@ class Link(Resource):
 
     def delete_link(self):
         return 'links:delete'
-    
+
     def delete_message(self):
-        return _('Are you sure you want delete the Website link')
\ No newline at end of file
+        return _('Are you sure you want delete the Website link')
--
libgit2 0.21.2