diff --git a/src/docs/views/base_views.py b/src/docs/views/base_views.py
index 1e33475..5e6c4a4 100644
--- a/src/docs/views/base_views.py
+++ b/src/docs/views/base_views.py
@@ -45,7 +45,6 @@ MEDIA_URL = getattr(settings, 'MEDIA_URL', '')
 
 ORDER_VAR = 'o'
 ORDER_TYPE_VAR = 'ot'
-GHOSTSCRIPTCMD = 'gs'
 
 
 class Ordering(object):
@@ -388,6 +387,8 @@ class BaseViews(object):
 
     def as_img(self, *args, **kwargs):
         """Вывести превью документа."""
+        GHOSTSCRIPTCMD = 'gs'
+
         try:
             obj = self.get_obj(kwargs['id'])
             pdf = self.get_pdf(*args, **kwargs)