diff --git a/pandora/document/models.py b/pandora/document/models.py
index 99d357c5..a1102717 100644
--- a/pandora/document/models.py
+++ b/pandora/document/models.py
@@ -233,7 +233,7 @@ class Document(models.Model):
 
     def get_info(self):
         if self.extension == 'pdf':
-            self.thumbnail()
+            self.thumbnail(1024)
             if self.pages == -1:
                 self.width = -1
                 self.height = -1