1 files changed, 1 insertions, 0 deletions
diff --git a/timer.h b/timer.h
index 127099d..3268182 100644
--- a/timer.h
+++ b/timer.h
@@ -28,6 +28,7 @@
 #ifndef _TIMER_H_
 #define _TIMER_H_
 
+#include <time.h>
 
 int timer_add(void (*callback) (void *data), void *data, const int interval, const int one_shot);