diff --git a/src/codeschool/lms/fields/models.py b/src/codeschool/lms/fields/models.py
index 3692f20..3f77032 100644
--- a/src/codeschool/lms/fields/models.py
+++ b/src/codeschool/lms/fields/models.py
@@ -1,8 +1,5 @@
 from django.utils.translation import ugettext_lazy as _
-
 from codeschool import models
-from django.core.exceptions import ValidationError
-from django.core.validators import URLValidator
 
 class Field(models.Model):
     """
@@ -43,25 +40,9 @@ class FieldValue(models.Model):
     field = models.ForeignKey('Field')
     user = models.ForeignKey('users.User')
     content = models.CharField(
-        max_length = 200,
+        max_length = 200
     )
 
-    def clean(self):
-        # Custom validation for generic type field
-        if self.field.field_type == Field.TYPE_INT:
-            if not isinstance(self.content, int):
-                raise ValidationError(_('Content must be a Int'))
-        elif self.field.field_type == Field.TYPE_FLOAT:
-            if not isinstance(self.content, float):
-                raise ValidationError(_('Content must be a float'))
-        elif self.field.field_type == Field.TYPE_URL:
-            url_validator = URLValidator()
-            try:
-                url_validator(self.content)
-            except:
-                ValidationError(_('Content must be a URL'))
-
-
     class Meta:
         unique_together = [('field', 'user')]
 
diff --git a/src/codeschool/lms/fields/serializers.py b/src/codeschool/lms/fields/serializers.py
index 5655bb9..15bbcff 100644
--- a/src/codeschool/lms/fields/serializers.py
+++ b/src/codeschool/lms/fields/serializers.py
@@ -1,5 +1,7 @@
 from rest_framework import serializers
-
+from django.utils.translation import ugettext_lazy as _
+from django.core.exceptions import ValidationError
+from django.core.validators import URLValidator
 from . import models
 
 
@@ -19,6 +21,39 @@ class FieldValueSerializer(serializers.HyperlinkedModelSerializer):
     Serialize Field Value objects.
     """
 
+    def validate(self, data):
+        # Custom validation for generic type field
+        field = data['field']
+        value = data['content']
+
+        if field.field_type == models.Field.TYPE_INT:
+            try:
+                parsed_value = int(value)
+            except:
+                raise ValidationError(
+                    _('%(value)s is not an Integer'),
+                    params={'value': value},
+                )
+        elif field.field_type == models.Field.TYPE_FLOAT:
+            try:
+                parsed_value = float(value)
+            except:
+                raise ValidationError(
+                    _('%(value)s is not an Float'),
+                    params={'value': value},
+                )
+        elif field.field_type == models.Field.TYPE_URL:
+            url_validator = URLValidator()
+            try:
+                url_validator(value)
+            except:
+                raise ValidationError(
+                    _('%(value)s is not an URL'),
+                    params={'value': value},
+                )
+
+        return data
+
     class Meta:
         model = models.FieldValue
         fields = (