diff --git a/competition/admin.py b/competition/admin.py
index 3151a58..bf7caa8 100644
--- a/competition/admin.py
+++ b/competition/admin.py
@@ -2,11 +2,21 @@
 from django.http import HttpResponseRedirect
 
 from competition.models import (Comment, Competition, Event, EventRegistration,
-                                LateTag, Problem, ProblemCorrection,
+                                Grade, LateTag, Problem, ProblemCorrection,
                                 Publication, RegistrationLink, Semester,
                                 Series, Solution)
 
 
+@admin.register(Grade)
+class GradeAdmin(admin.ModelAdmin):
+    list_display = (
+        'name',
+        'tag',
+        'years_until_graduation',
+        'is_active'
+    )
+
+
 @admin.register(Competition)
 class CompetitionAdmin(admin.ModelAdmin):
     list_display = (
diff --git a/competition/models.py b/competition/models.py
index 8af195f..7da265a 100644
--- a/competition/models.py
+++ b/competition/models.py
@@ -810,8 +810,8 @@ def __str__(self):
 class ProblemCorrection(models.Model):
     # TODO: Add images
     class Meta:
-        verbose_name = 'opravenie úlohy'
-        verbose_name_plural = 'opravene ulohy'
+        verbose_name = 'Opravenie úlohy'
+        verbose_name_plural = 'Opravené úlohy'
 
     problem = models.OneToOneField(
         Problem,