diff --git a/happstack-wai.cabal b/happstack-wai.cabal
index 14b58f2..cb3c9ff 100644
--- a/happstack-wai.cabal
+++ b/happstack-wai.cabal
@@ -25,7 +25,7 @@ library
                        case-insensitive == 0.4.*,
                        conduit == 0.2.*,
                        containers == 0.4.*,
-                       happstack-server == 6.5.* || == 6.6.*,
+                       happstack-server >= 6.4 && < 6.7,
                        http-types == 0.6.*,
                        old-locale == 1.0.*,
                        text == 0.11.*,
diff --git a/src/Happstack/Server/Wai.hs b/src/Happstack/Server/Wai.hs
index 5ce4a82..1ce70eb 100644
--- a/src/Happstack/Server/Wai.hs
+++ b/src/Happstack/Server/Wai.hs
@@ -59,7 +59,9 @@ convertRequest wReq = do
 
   return $
     H.Request
+#if MIN_VERSION_happstack_server(6,5,0)
      (W.isSecure wReq)
+#endif
      (convertMethod $ W.requestMethod wReq)
      (convertPath $ W.pathInfo wReq)
      rawPath -- includes leading slash, does not include query