1 files changed, 2 insertions, 0 deletions
diff --git a/include/locale.h b/include/locale.h
index 9da47269..c6cc1ec7 100644
--- a/include/locale.h
+++ b/include/locale.h
@@ -5,6 +5,8 @@
 extern "C" {
 #endif
 
+#include <features.h>
+
 #undef NULL
 #ifdef __cplusplus
 #define NULL 0