diff --git a/include/stdbool.h b/include/stdbool.h
index 1e6bd6578c5..f31e63e409f 100644
--- a/include/stdbool.h
+++ b/include/stdbool.h
@@ -31,6 +31,8 @@
 
 #define	__bool_true_false_are_defined	1
 
+#ifndef __cplusplus
+
 #define	false	0
 #define	true	1
 
@@ -39,4 +41,6 @@
 typedef	int	_Bool;
 #endif
 
+#endif /* !__cplusplus */
+
 #endif /* !_STDBOOL_H_ */