1 files changed, 1 insertions, 1 deletions

diff --git a/doc/chapters/responseheaders.inc b/doc/chapters/responseheaders.inc
index 19d10142..3fb9ac15 100644
--- a/doc/chapters/responseheaders.inc
+++ b/doc/chapters/responseheaders.inc
@@ -25,7 +25,7 @@ Once again, we can base the new example on the @code{hellobrowser} program.
 
 int answer_to_connection (void *cls, struct MHD_Connection *connection, const char *url, 
                           const char *method, const char *version, const char *upload_data, 
-                          unsigned int *upload_data_size, void **con_cls)
+                          size_t *upload_data_size, void **con_cls)
 {
   unsigned char *buffer = NULL;
   struct MHD_Response *response;