diff --git a/webagg/inputrequest.py b/webagg/inputrequest.py
index e7f13a85..19ff1960 100644
--- a/webagg/inputrequest.py
+++ b/webagg/inputrequest.py
@@ -85,7 +85,7 @@ class DirectWSGIInputRequest(object):
 
     def get_full_request_uri(self):
         req_uri = self.env.get('REQUEST_URI')
-        if req_uri:
+        if req_uri and not self.env.get('SCRIPT_NAME'):
             return req_uri
 
         req_uri = quote(self.env.get('PATH_INFO', ''), safe='/~!$&\'()*+,;=:@')