diff --git a/src/reader.cpp b/src/reader.cpp
index 01a10b2e4..85bbe722d 100644
--- a/src/reader.cpp
+++ b/src/reader.cpp
@@ -18,6 +18,7 @@
  */
 
 #include "reader.h"
+#include <time.h>
 
 inline char hi(char v) {
     char hex[] = "0123456789abcdef";