foo..diff

diff --git a/pontoon/base/utils.py b/pontoon/base/utils.py
index 3774ea4c..1efa0a21 100644
--- a/pontoon/base/utils.py
+++ b/pontoon/base/utils.py
@@ -23,9 +23,7 @@ from xml.sax.saxutils import (
 )
 
 from django.db.models import Prefetch
-from django.http import (
-    HttpResponseBadRequest,
-)
+from django.http import HttpResponseBadRequest
 from django.shortcuts import get_object_or_404
 from django.utils import timezone
 from django.utils.translation import trans_real
@@ -645,3 +643,21 @@ def get_m2m_changes(current_qs, new_qs):
     )
 
     return list(add_items), list(remove_items)
+
+
+def translation_is_duplicate(same_translations, can_translate):
+    """
+    Check
+    :return:
+    """
+    # Same translation
+    st = same_translations[0]
+
+    if can_translate and st.approved and not st.fuzzy:
+        return True
+
+    elif not st.fuzzy:
+        return True
+
+    return False
+
diff --git a/pontoon/base/views.py b/pontoon/base/views.py
index 102c3e25..2142a44f 100755
--- a/pontoon/base/views.py
+++ b/pontoon/base/views.py
@@ -28,6 +28,7 @@ from django.views.decorators.http import (
 )
 from django.views.generic.edit import FormView
 
+from base.utils import translation_is_duplicate
 from pontoon.base import forms
 from pontoon.base import utils
 from pontoon.base.models import (
@@ -42,7 +43,7 @@ from pontoon.base.models import (
     UserProfile,
 )
 
-from pontoon.checks.utils import get_quality_checks
+from pontoon.checks.utils import run_checks
 
 
 log = logging.getLogger(__name__)
@@ -545,33 +546,32 @@ def update_translation(request):
     translations = Translation.objects.filter(
         entity=e, locale=locale, plural_form=plural_form)
 
-    # Newlines are not allowed in .lang files (bug 1190754)
-    if e.resource.format == 'lang' and '\n' in string:
-        return HttpResponse('Newline characters are not allowed.')
+    # Same translation exists
+    same_translations = translations.filter(string=string).order_by(
+        '-approved', 'rejected', '-date'
+    )
+
+
+    checks = run_checks(
+        e,
+        locale,
+        plural_form,
+        string,
+        ignore,
+        translation_is_duplicate(same_translations, can_translate)
+    )
 
-    checks = get_quality_checks(e, locale, plural_form, string, ignore)
     if checks:
         return checks
 
     # Translations exist
     if len(translations) > 0:
-        # Same translation exists
-        same_translations = translations.filter(string=string).order_by(
-            '-approved', 'rejected', '-date'
-        )
         if len(same_translations) > 0:
             t = same_translations[0]
 
             # If added by privileged user, approve and unfuzzy it
             if can_translate:
-
-                # Unless there's nothing to be changed
-                if t.approved and not t.fuzzy:
-                    return JsonResponse({
-                        'same': True,
-                        'message': 'Same translation already exists.',
-                    })
-
+                # Check if there are errors that should be fixed
                 translations.update(
                     approved=False,
                     approved_user=None,
@@ -601,24 +601,18 @@ def update_translation(request):
                 })
 
             # If added by non-privileged user, unfuzzy it
-            else:
-                if t.fuzzy:
-                    t.approved = False
-                    t.approved_user = None
-                    t.approved_date = None
-                    t.fuzzy = False
-
-                    t.save()
+            elif t.fuzzy:
+                t.approved = False
+                t.approved_user = None
+                t.approved_date = None
+                t.fuzzy = False
 
-                    return JsonResponse({
-                        'type': 'updated',
-                        'translation': t.serialize(),
-                        'stats': TranslatedResource.objects.stats(project, paths, locale),
-                    })
+                t.save()
 
                 return JsonResponse({
-                    'same': True,
-                    'message': 'Same translation already exists.',
+                    'type': 'updated',
+                    'translation': t.serialize(),
+                    'stats': TranslatedResource.objects.stats(project, paths, locale),
                 })
 
         # Different translation added
diff --git a/pontoon/checks/utils/__init__.py b/pontoon/checks/utils/__init__.py
index 6afefe5e..de9c4ca8 100644
--- a/pontoon/checks/utils/__init__.py
+++ b/pontoon/checks/utils/__init__.py
@@ -4,7 +4,7 @@ import compare
 import translate_toolkit
 
 
-def get_quality_checks(entity, locale, plural_form, string, ignore_warnings):
+def run_checks(entity, locale, plural_form, string, ignore_warnings, same):
     """
     Main function that performs all quality checks from frameworks handled in Pontoon.
 
@@ -13,6 +13,8 @@ def get_quality_checks(entity, locale, plural_form, string, ignore_warnings):
     :arg basestring string: a translation
     :arg int plural_form: plural form of a translation
     :arg bool ignore_warnings: omit warnings
+    :arg bool same: omit warnings
+
     :return: Return types:
         * JsonResponse - If there are errors or
         * None - If there's no errors and non-omitted warnings.
@@ -42,7 +44,19 @@ def get_quality_checks(entity, locale, plural_form, string, ignore_warnings):
         **(cl_checks or {})
     )
 
-    if (not ignore_warnings and checks) or ('clErrors' in checks):
+
+    # Newlines are not allowed in .lang files (bug 1190754)
+    if entity.resource.format == 'lang' and '\n' in string:
+        checks.setdefault('pErrors', []).append(
+            'Newline characters are not allowed.'
+        )
+
+    if same:
+        checks.setdefault('pErrors', []).append(
+            'Same translation already exists.'
+        )
+
+    if (not ignore_warnings and checks) or ('clErrors' in checks) or ('pErrors' in checks):
         return JsonResponse({
             'failedChecks': checks
         })