diff --git a/newlib/libc/include/langinfo.h b/newlib/libc/include/langinfo.h
index 59381d6b6..458b92565 100644
--- a/newlib/libc/include/langinfo.h
+++ b/newlib/libc/include/langinfo.h
@@ -36,7 +36,10 @@
 #include <xlocale.h>
 #endif
 
+#ifndef _NL_ITEM_DECLARED
 typedef int nl_item;
+#define _NL_ITEM_DECLARED
+#endif
 
 enum __nl_item
 {