diff --git a/gnu/usr.bin/cc/cc_tools/freebsd-native.h b/gnu/usr.bin/cc/cc_tools/freebsd-native.h
index f4200d98b900..f5cae31efdda 100644
--- a/gnu/usr.bin/cc/cc_tools/freebsd-native.h
+++ b/gnu/usr.bin/cc/cc_tools/freebsd-native.h
@@ -15,6 +15,7 @@
 
 /* Look for the include files in the system-defined places.  */
 #define GPLUSPLUS_INCLUDE_DIR		PREFIX"/include/g++"
+#define	GPLUSPLUS_BACKWARD_INCLUDE_DIR	PREFIX"/include/g++/backward"
 #define GCC_INCLUDE_DIR			PREFIX"/include"
 #ifdef CROSS_COMPILE
 #define CROSS_INCLUDE_DIR		PREFIX"/include"