diff --git a/doc/examples/http_multiclient.c b/doc/examples/http_multiclient.c
index b9a306d835..a48d36f197 100644
--- a/doc/examples/http_multiclient.c
+++ b/doc/examples/http_multiclient.c
@@ -33,7 +33,7 @@
 #include <libavutil/opt.h>
 #include <unistd.h>
 
-void process_client(AVIOContext *client, const char *in_uri)
+static void process_client(AVIOContext *client, const char *in_uri)
 {
     AVIOContext *input = NULL;
     uint8_t buf[1024];