--- src/FingerprintPAM.cpp.orig	2016-04-12 05:13:32.786979623 +0200
+++ src/FingerprintPAM.cpp	2016-04-12 05:13:58.427980946 +0200
@@ -38,6 +38,7 @@
 #include <errno.h>
 #include <pwd.h>
 #include <string>
+#include <limits.h>
 
 #include "../include/Globals.h"