diff --git a/test/others/libcriu/test_iters.c b/test/others/libcriu/test_iters.c
index edbaf87f6..93ae6f3e3 100644
--- a/test/others/libcriu/test_iters.c
+++ b/test/others/libcriu/test_iters.c
@@ -18,7 +18,7 @@ static void sh(int sig)
 	stop = 1;
 }
 
-static int open_imgdir(void)
+static void open_imgdir(void)
 {
 	char p[10];