diff --git a/src/config.h.in b/src/config.h.in
index 7b4b728..ba8ea21 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -244,6 +244,7 @@
 #include <fcntl.h>
 #include <time.h>
 #include <errno.h>
+#include <limits.h>
 
 /*
  *  stuff under here shouldnt be changed