diff --git a/db/atu/models.py b/db/atu/models.py
index 2a1fa99..eaf6a5c 100644
--- a/db/atu/models.py
+++ b/db/atu/models.py
@@ -6,7 +6,7 @@ from core.utils import SingletonModel
 
 
 class Atu(SingletonModel):
-    content = HTMLField('Tekst')
+    content = HTMLField('Tekst', default='', blank=True)
 
     def __str__(self):
         return 'Stowarzyszenie Brydżowe ATU'
diff --git a/db/calendar/models.py b/db/calendar/models.py
index b9a7d64..f6fd26e 100644
--- a/db/calendar/models.py
+++ b/db/calendar/models.py
@@ -6,7 +6,7 @@ from tinymce.models import HTMLField
 
 class Calendar(models.Model):
     year = models.IntegerField('Rok', primary_key=True)
-    content = HTMLField('Kalendarz')
+    content = HTMLField('Kalendarz', default='', blank=True)
 
     def __str__(self):
         return f'Kalendarz {self.year}'
diff --git a/db/gpb/models.py b/db/gpb/models.py
index 845797f..419d884 100644
--- a/db/gpb/models.py
+++ b/db/gpb/models.py
@@ -6,7 +6,7 @@ from core.utils import SingletonModel
 
 
 class GrandPrixB(SingletonModel):
-    content = HTMLField('Tekst GPB')
+    content = HTMLField('Tekst GPB', default='', blank=True)
 
     def __str__(self):
         return 'Grand Prix Białegostoku'
diff --git a/db/main/models.py b/db/main/models.py
index d65ffd1..4bb589d 100644
--- a/db/main/models.py
+++ b/db/main/models.py
@@ -8,7 +8,7 @@ from core.utils import SingletonModel
 
 class Post(OrderableModel):
     title = models.CharField('Tytuł', default='', blank=True, max_length=250)
-    content = HTMLField('Treść')
+    content = HTMLField('Treść', default='', blank=True)
     created_at = models.DateTimeField(auto_now_add=True)
 
     def __str__(self):
@@ -20,7 +20,7 @@ class Post(OrderableModel):
 
 
 class GrandPrixW(SingletonModel):
-    content = HTMLField('Tekst GPW')
+    content = HTMLField('Tekst GPW', default='', blank=True)
 
     def __str__(self):
         return 'Grand Prix Województwa'
diff --git a/db/tournaments/models.py b/db/tournaments/models.py
index e1b4f2f..f186aad 100644
--- a/db/tournaments/models.py
+++ b/db/tournaments/models.py
@@ -10,7 +10,7 @@ class Tournament(OrderableModel):
     photo = FileBrowseField(
         'Zdjęcie', directory='inneturnieje/', max_length=200, blank=True)
     title = models.CharField('Tytuł', default='', blank=True, max_length=250)
-    content = HTMLField('Tekst')
+    content = HTMLField('Tekst', default='', blank=True)
     link = models.TextField('Link do wyników')
 
     def __str__(self):