diff --git a/sapl/protocoloadm/forms.py b/sapl/protocoloadm/forms.py
index 38bc66365..3c8af24ab 100644
--- a/sapl/protocoloadm/forms.py
+++ b/sapl/protocoloadm/forms.py
@@ -666,9 +666,17 @@ class DocumentoAcessorioAdministrativoForm(FileFieldCheckMixin, ModelForm):
 
         arquivo = self.cleaned_data.get('arquivo', False)
 
-        if arquivo and arquivo.size > MAX_DOC_UPLOAD_SIZE:
-            raise ValidationError("O arquivo deve ser menor que {0:.1f} mb, o tamanho atual desse arquivo é {1:.1f} mb" \
-                .format((MAX_DOC_UPLOAD_SIZE/1024)/1024, (arquivo.size/1024)/1024))
+        if arquivo:
+            if len(arquivo.name) > 200:
+                raise ValidationError(
+                    "Certifique-se de que o nome do arquivo no campo 'Arquivo' tenha no máximo 200 " \
+                    "caracteres (ele possui {})".format(len(arquivo.name))
+                )
+            if arquivo.size > MAX_DOC_UPLOAD_SIZE:
+                raise ValidationError(
+                    "O arquivo deve ser menor que {0:.1f} mb, o tamanho atual desse arquivo é {1:.1f} mb" \
+                    .format((MAX_DOC_UPLOAD_SIZE/1024)/1024, (arquivo.size/1024)/1024)
+                )
 
         return self.cleaned_data
 
diff --git a/sapl/protocoloadm/migrations/0027_auto_20191024_1408.py b/sapl/protocoloadm/migrations/0027_auto_20191024_1408.py
new file mode 100644
index 000000000..a4262c3a9
--- /dev/null
+++ b/sapl/protocoloadm/migrations/0027_auto_20191024_1408.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.20 on 2019-10-24 17:08
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import sapl.utils
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('protocoloadm', '0026_auto_20191024_1356'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='documentoacessorioadministrativo',
+            name='arquivo',
+            field=models.FileField(blank=True, max_length=300, null=True, storage=sapl.utils.OverwriteStorage(), upload_to=sapl.utils.texto_upload_path, verbose_name='Arquivo'),
+        ),
+    ]
diff --git a/sapl/protocoloadm/models.py b/sapl/protocoloadm/models.py
index 26dd190ef..9145dfdcc 100644
--- a/sapl/protocoloadm/models.py
+++ b/sapl/protocoloadm/models.py
@@ -232,7 +232,7 @@ class DocumentoAcessorioAdministrativo(models.Model):
         verbose_name=_('Tipo'))
     nome = models.CharField(max_length=30, verbose_name=_('Nome'))
     arquivo = models.FileField(
-        max_length=200,
+        max_length=300,
         blank=True,
         null=True,
         upload_to=texto_upload_path,