1 files changed, 4 insertions, 0 deletions

diff --git a/src/examples/fileserver_example_external_select.c b/src/examples/fileserver_example_external_select.c
index 1ae79e16..6aea6dbf 100644
--- a/src/examples/fileserver_example_external_select.c
+++ b/src/examples/fileserver_example_external_select.c
@@ -62,6 +62,10 @@ ahc_echo (void *cls,
   FILE *file;
   int fd;
   struct stat buf;
+  (void)cls;               /* Unused. Silent compiler warning. */
+  (void)version;           /* Unused. Silent compiler warning. */
+  (void)upload_data;       /* Unused. Silent compiler warning. */
+  (void)upload_data_size;  /* Unused. Silent compiler warning. */
 
   if (0 != strcmp (method, MHD_HTTP_METHOD_GET))
     return MHD_NO;              /* unexpected method */