diff --git a/gunicorn/http/wsgi.py b/gunicorn/http/wsgi.py
index c537166ea..1d48467d1 100644
--- a/gunicorn/http/wsgi.py
+++ b/gunicorn/http/wsgi.py
@@ -355,6 +355,10 @@ def sendfile(self, respiter):
 
         try:
             fileno = respiter.filelike.fileno()
+        except AttributeError:
+            return False
+
+        try:
             offset = os.lseek(fileno, 0, os.SEEK_CUR)
             if self.response_length is None:
                 filesize = os.fstat(fileno).st_size