--- c-ray-master/src/utils/timer.c	2021-03-13 00:26:36.846000000 +0100
+++ c-ray-master/src/utils/timer.c	2021-03-13 00:27:29.453478737 +0100
@@ -48,7 +48,7 @@
 	return ((tmr2.tv_sec - timer.tv_sec) * 1000000) + (tmr2.tv_usec - timer.tv_usec);
 }
 
-#ifdef __linux__
+#if defined(__linux__) || defined(__serenity__)
 #define _BSD_SOURCE
 #include <unistd.h>
 #endif
@@ -66,7 +66,7 @@
 	ts.tv_sec = ms / 1000;
 	ts.tv_nsec = (ms % 1000) * 1000000;
 	nanosleep(&ts, NULL);
-#elif __linux__
+#elif defined(__linux__) || defined(__serenity__)
 	usleep(ms * 1000);
 #endif
 }