diff --git a/src/main.c b/src/main.c
index a7db66d..1ecf431 100644
--- a/src/main.c
+++ b/src/main.c
@@ -19,6 +19,7 @@
 
 #include "config.h"
 
+#include <locale.h>
 #include <poll.h>
 #include <stdlib.h>