diff --git a/gcc/system.h b/gcc/system.h
index c25cd64366f7f0a714aa4547e25d85ae5331320c..c5562cc49a3054b21698564a72830c5d73178fb3 100644
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -239,6 +239,7 @@ extern int errno;
 # include <functional>
 #endif
 # include <cstring>
+# include <initializer_list>
 # include <new>
 # include <utility>
 # include <type_traits>