diff --git a/test/run_convert.c b/test/run_convert.c
index 289e4baf6..ddfca0870 100644
--- a/test/run_convert.c
+++ b/test/run_convert.c
@@ -36,6 +36,16 @@
 #include <stddef.h>
 #include <unistd.h>
 
+static void
+my_log_func(const gchar *log_domain, G_GNUC_UNUSED GLogLevelFlags log_level,
+	    const gchar *message, G_GNUC_UNUSED gpointer user_data)
+{
+	if (log_domain != NULL)
+		g_printerr("%s: %s\n", log_domain, message);
+	else
+		g_printerr("%s\n", message);
+}
+
 const char *
 config_get_string(G_GNUC_UNUSED const char *name, const char *default_value)
 {
@@ -56,6 +66,8 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
+	g_log_set_default_handler(my_log_func, NULL);
+
 	if (!audio_format_parse(&in_audio_format, argv[1],
 				false, &error)) {
 		g_printerr("Failed to parse audio format: %s\n",