diff --git a/tests/modules/auth.c b/tests/modules/auth.c
index 9ef0626cb..19be95a0a 100644
--- a/tests/modules/auth.c
+++ b/tests/modules/auth.c
@@ -1,3 +1,7 @@
+/* define macros for having usleep */
+#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
+
 #include "redismodule.h"
 
 #include <string.h>