diff --git a/src/fdcache.cpp b/src/fdcache.cpp
index 3ececd3..3ad876d 100644
--- a/src/fdcache.cpp
+++ b/src/fdcache.cpp
@@ -21,6 +21,7 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cerrno>
+#include <climits>
 #include <unistd.h>
 #include <sys/types.h>
 #include <dirent.h>