diff --git a/typing-break/drw-monitor.c b/typing-break/drw-monitor.c
index 2a4653760..19203e261 100644
--- a/typing-break/drw-monitor.c
+++ b/typing-break/drw-monitor.c
@@ -28,6 +28,7 @@
 #include <sys/ioctl.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <X11/Xlib.h>