diff --git a/main.c b/main.c
index f2f6d993af91a54e1bde7b486bca0ab9fa97789e..a065f3cceaa6a5fc7e515829094e942a671521e9 100644
--- a/main.c
+++ b/main.c
@@ -5,6 +5,13 @@
 #include <time.h>
 #include <unistd.h>
 
+#define NO_WAIT
+#ifdef NO_WAIT
+#define uspleep(x) ((void)0)
+#else
+#define uspleep(x) usleep(x)
+#endif
+
 // structure site
 typedef struct {
     int available_bikes;