diff -r 4a10bc0ee80d -r 4e6e812c1d97 src/server/daemon/error.c
--- a/src/server/daemon/error.c	Thu Jun 20 13:27:07 2013 +0200
+++ b/src/server/daemon/error.c	Thu Jun 20 14:07:46 2013 +0200
@@ -93,7 +93,7 @@
     }
     
     char buf[512];
-    int len = snprintf(buf, 512, "HTTP/1.1 %d %s\r\nServer: webserver\r\nContent-type: text/html\r\nContent-length: %d\r\n\r\n", status, statusmsg, msg.length);
+    int len = snprintf(buf, 512, "HTTP/1.1 %d %s\r\nServer: webserver\r\nContent-type: text/html\r\nContent-length: %zd\r\n\r\n", status, statusmsg, msg.length);
     
     // set socket blocking
     int flags;