diff --git a/test/bench_httpclient.c b/test/bench_httpclient.c
index f0888e6c..87103cc8 100644
--- a/test/bench_httpclient.c
+++ b/test/bench_httpclient.c
@@ -36,6 +36,7 @@
 # endif
 #endif
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 
 #include "event2/event.h"
@@ -130,6 +131,8 @@ launch_request(void)
 
 	struct request_info *ri;
 
+	memset(&sin, 0, sizeof(sin));
+
 	++total_n_launched;
 
 	sin.sin_family = AF_INET;