diff --git a/tests/libtest/testtrace.c b/tests/libtest/testtrace.c
index 9c082394e..5cb5fec5e 100644
--- a/tests/libtest/testtrace.c
+++ b/tests/libtest/testtrace.c
@@ -111,7 +111,7 @@ int libtest_debug_cb(CURL *handle, curl_infotype type,
 
   switch (type) {
   case CURLINFO_TEXT:
-    fprintf(stderr, "%s== Info: %s", timebuf, data);
+    fprintf(stderr, "%s== Info: %s", &timebuf[0], data);
   default: /* in case a new one is introduced to shock us */
     return 0;