diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 98912e7a00..c79ce1041c 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -12,6 +12,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <limits.h>
 
 #include "util.hh"