diff --git a/iucode_tool.c b/iucode_tool.c
index 460087c..8825ed6 100644
--- a/iucode_tool.c
+++ b/iucode_tool.c
@@ -31,6 +31,7 @@
 #include <dirent.h>
 #include <time.h>
 #include <cpuid.h>
+#include <limits.h>
 
 #include "intel_microcode.h"