diff --git a/libs/libc/include/locale.h b/libs/libc/include/locale.h
index 2fc432d9..d43fc8e7 100644
--- a/libs/libc/include/locale.h
+++ b/libs/libc/include/locale.h
@@ -4,6 +4,7 @@
 #define LC_ALL 0
 #define LC_CTYPE 1
 #define LC_COLLATE 2
+#define LC_NUMERIC 3
 
 #ifdef __cplusplus
 extern "C"