diff --git a/test-apps/test-client.c b/test-apps/test-client.c
index afed493f9..05d08ed72 100644
--- a/test-apps/test-client.c
+++ b/test-apps/test-client.c
@@ -125,7 +125,7 @@ callback_dumb_increment(struct lws *wsi, enum lws_callback_reasons reason,
 #endif
 #endif
 	const char *which = "http";
-       char which_wsi[20], buf[50 + LWS_PRE];
+       char which_wsi[50], buf[80 + LWS_PRE];
 	int n;
 
 	switch (reason) {