diff --git a/LCDproc.cpp b/LCDproc.cpp
index 02a5903..0281f2e 100644
--- a/LCDproc.cpp
+++ b/LCDproc.cpp
@@ -51,6 +51,7 @@
 #include <cassert>
 #include <cstring>
 #include <cstdlib>
+#include <clocale>
 #include <ctime>
 
 #if !defined(_WIN32) && !defined(_WIN64)