diff --git a/cotisations/migrations/0040_auto_20190120_1708.py b/cotisations/migrations/0040_auto_20190120_1708.py
new file mode 100644
index 00000000..b7f5b279
--- /dev/null
+++ b/cotisations/migrations/0040_auto_20190120_1708.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2019-01-20 23:08
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cotisations', '0039_documenttemplate'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='documenttemplate',
+            name='name',
+            field=models.CharField(max_length=125, unique=True, verbose_name='name'),
+        ),
+    ]
diff --git a/cotisations/models.py b/cotisations/models.py
index d7178f20..88407d33 100644
--- a/cotisations/models.py
+++ b/cotisations/models.py
@@ -967,8 +967,9 @@ class DocumentTemplate(RevMixin, AclMixin, models.Model):
         verbose_name=_('template')
     )
     name = models.CharField(
-        max_length=255,
-        verbose_name=_('name')
+        max_length=125,
+        verbose_name=_('name'),
+        unique=True
     )
 
     class Meta: