diff --git a/hs20/server/www/spp.php b/hs20/server/www/spp.php
index dde4434d1..002d0280f 100644
--- a/hs20/server/www/spp.php
+++ b/hs20/server/www/spp.php
@@ -96,7 +96,8 @@ else
   putenv("HS20USER");
 
 putenv("HS20REALM=$realm");
-putenv("HS20POST=$HTTP_RAW_POST_DATA");
+$postdata = file_get_contents("php://input");
+putenv("HS20POST=$postdata");
 $addr = $_SERVER["REMOTE_ADDR"];
 putenv("HS20ADDR=$addr");