diff --git a/ncurses-pong.c b/ncurses-pong.c
index c5ac8ec..06e806c 100644
--- a/ncurses-pong.c
+++ b/ncurses-pong.c
@@ -1,3 +1,5 @@
+#define _BSD_SOURCE
+
 #include <ncurses.h>
 #include <unistd.h>