diff --git a/django/contrib/admin/templatetags/log.py b/django/contrib/admin/templatetags/log.py
index 84c7e6c7a6..36f40f1942 100644
--- a/django/contrib/admin/templatetags/log.py
+++ b/django/contrib/admin/templatetags/log.py
@@ -14,9 +14,10 @@ class AdminLogNode(template.Node):
         if self.user is None:
             context[self.varname] = LogEntry.objects.all().select_related('content_type', 'user')[:self.limit]
         else:
-            if not self.user.isdigit():
-                self.user = context[self.user].id
-            context[self.varname] = LogEntry.objects.filter(user__id__exact=self.user).select_related('content_type', 'user')[:self.limit]
+            user_id = self.user
+            if not user_id.isdigit():
+                user_id = context[self.user].id
+            context[self.varname] = LogEntry.objects.filter(user__id__exact=user_id).select_related('content_type', 'user')[:self.limit]
         return ''
 
 class DoGetAdminLog: