diff --git a/index.c b/index.c
index b35b406..3dd93e0 100644
--- a/index.c
+++ b/index.c
@@ -5,11 +5,19 @@
 
 /* C wrapper to allow ezmlm-web.cgi to run suid */
 /* Copyright (C) 1999/2000, Guy Antony Halse, All Rights Reserved */
+/* Copyright (C) 02005/02006, Lars Kruse, All Rights Reserved */
 /* See the README file in this distribution for copyright information */
 
 int main(void) {
-   /* Change this path to wherever you decided to put ezmlm-web.cgi */
-   execv("/usr/local/bin/ezmlm-web.cgi", NULL); 
+
+	/* Set the (real) uid to the same value, as the effective uid.
+	   This is necesary, as (the suid) gpg tries to run on behalf of www-data
+	   instead of the presumed user.
+	   I hope, that this will not break on non-linux systems ... */
+	setreuid(getuid(), -1);
+	
+	/* Change this path to wherever you decided to put ezmlm-web.cgi */
+	execv("/usr/local/bin/ezmlm-web.cgi", NULL); 
 
 	/* Note that you could also use the following to allow a specific user
 	   to store their mailing lists and configuration file in a different