diff --git a/meson.build b/meson.build
index ad0e48e1..72a756d1 100644
--- a/meson.build
+++ b/meson.build
@@ -133,7 +133,7 @@ conf_data.set10('HAVE_SYS_TIME_H', 1)
 compiler = meson.get_compiler('c')
 
 if conf_data.get('CONFIG_ECMASCRIPT')
-    extracflags = ['-xc++', '-fpermissive', '-Wno-sign-compare']
+    extracflags = ['-xc++', '-fpermissive', '-Wno-sign-compare', '-std=c++17']
 else
     extracflags = ['-Wc++-compat']
 endif