diff --git a/tools/test-runner.c b/tools/test-runner.c
index 28d98142..00f63157 100644
--- a/tools/test-runner.c
+++ b/tools/test-runner.c
@@ -326,10 +326,15 @@ static pid_t execute_program(char *argv[], bool wait)
 {
 	int status;
 	pid_t pid, child_pid;
+	char *str;
 
 	if (!argv[0])
 		return -1;
 
+	str = l_strjoinv(argv, ' ');
+	l_debug("Executing: %s", str);
+	l_free(str);
+
 	child_pid = fork();
 	if (child_pid < 0) {
 		l_error("Failed to fork new process");