diff --git a/pywb/apps/frontendapp.py b/pywb/apps/frontendapp.py
index 3ab74bfc..956805eb 100644
--- a/pywb/apps/frontendapp.py
+++ b/pywb/apps/frontendapp.py
@@ -641,8 +641,8 @@ class FrontEndApp(object):
         urls = self.url_map.bind_to_environ(environ)
         try:
             endpoint, args = urls.match()
-            # store original script_name (original prefix) before modifications are made
-            environ['pywb.app_prefix'] = environ.get('SCRIPT_NAME', '')
+
+            self.rewriterapp.prepare_env(environ)
 
             # store original script_name (original prefix) before modifications are made
             environ['ORIG_SCRIPT_NAME'] = environ.get('SCRIPT_NAME')
diff --git a/pywb/apps/rewriterapp.py b/pywb/apps/rewriterapp.py
index ca5aa9d5..8123cf95 100644
--- a/pywb/apps/rewriterapp.py
+++ b/pywb/apps/rewriterapp.py
@@ -303,15 +303,24 @@ class RewriterApp(object):
 
         return resp
 
-    def render_content(self, wb_url, kwargs, environ):
-        wb_url = wb_url.replace('#', '%23')
-        wb_url = WbUrl(wb_url)
+    def prepare_env(self, environ):
+        """ setup environ path prefixes and scheme """
+        if 'pywb.host_prefix' in environ:
+            return
 
         proto = environ.get('HTTP_X_FORWARDED_PROTO', self.force_scheme)
 
         if proto:
             environ['wsgi.url_scheme'] = proto
 
+        environ['pywb.host_prefix'] = self.get_host_prefix(environ)
+        environ['pywb.app_prefix'] = environ.get('SCRIPT_NAME', '')
+        environ['pywb.static_prefix'] = environ['pywb.host_prefix'] + environ['pywb.app_prefix'] + '/' + self.static_prefix
+
+    def render_content(self, wb_url, kwargs, environ):
+        wb_url = wb_url.replace('#', '%23')
+        wb_url = WbUrl(wb_url)
+
         history_page = environ.pop('HTTP_X_WOMBAT_HISTORY_PAGE', '')
         if history_page:
             wb_url.url = history_page
@@ -321,13 +330,13 @@ class RewriterApp(object):
 
         is_timegate = self._check_accept_dt(wb_url, environ)
 
-        host_prefix = self.get_host_prefix(environ)
+        self.prepare_env(environ)
+
+        host_prefix = environ['pywb.host_prefix']
         rel_prefix = self.get_rel_prefix(environ)
         full_prefix = host_prefix + rel_prefix
-        environ['pywb.host_prefix'] = host_prefix
-        pywb_static_prefix = host_prefix + environ.get('pywb.app_prefix', '') + '/' + self.static_prefix
-        environ['pywb.static_prefix'] = pywb_static_prefix
-        pywb_static_prefix += '/'
+
+        pywb_static_prefix = environ['pywb.static_prefix'] + '/'
         is_proxy = ('wsgiprox.proxy_host' in environ)
 
         # if OPTIONS in proxy mode, just generate the proxy responss
diff --git a/pywb/version.py b/pywb/version.py
index e1e6add7..1fe20f2e 100644
--- a/pywb/version.py
+++ b/pywb/version.py
@@ -1,4 +1,4 @@
-__version__ = '2.6.2'
+__version__ = '2.6.3'
 
 if __name__ == '__main__':
     print(__version__)
diff --git a/tests/test_integration.py b/tests/test_integration.py
index acfef645..f5abf5f0 100644
--- a/tests/test_integration.py
+++ b/tests/test_integration.py
@@ -12,12 +12,25 @@ class TestWbIntegration(BaseConfigTest):
     def test_home(self):
         resp = self.testapp.get('/')
         self._assert_basic_html(resp)
+        assert '<link rel="stylesheet" href="http://localhost:80/static/css/base.css"' in resp.text
+        assert '/pywb' in resp.text
+
+    def test_home_custom_prefix(self):
+        resp = self.testapp.get('/', extra_environ={'SCRIPT_NAME': '/wayback'})
+        self._assert_basic_html(resp)
+        assert '<link rel="stylesheet" href="http://localhost:80/wayback/static/css/base.css"' in resp.text
         assert '/pywb' in resp.text
 
     def test_pywb_root(self):
         resp = self.testapp.get('/pywb/')
         self._assert_basic_html(resp)
-        assert '<link rel="stylesheet" href="/static/css/base.css"' in resp.text
+        assert '<link rel="stylesheet" href="http://localhost:80/static/css/base.css"' in resp.text
+        assert 'Search' in resp.text
+
+    def test_pywb_root_custom_prefix(self):
+        resp = self.testapp.get('/pywb/', extra_environ={'SCRIPT_NAME': '/wayback'})
+        self._assert_basic_html(resp)
+        assert '<link rel="stylesheet" href="http://localhost:80/wayback/static/css/base.css"' in resp.text
         assert 'Search' in resp.text
 
     def test_pywb_root_head(self):
diff --git a/wombat b/wombat
index e0567d5f..72db7943 160000
--- a/wombat
+++ b/wombat
@@ -1 +1 @@
-Subproject commit e0567d5f7bbecd1687d46ee2c7883c0bfd39a6c2
+Subproject commit 72db79431401ad6d7449eb77c37a6a82b84113c8