diff --git a/src/flags.cc b/src/flags.cc
index ab5b57c..75e66ce 100644
--- a/src/flags.cc
+++ b/src/flags.cc
@@ -548,4 +548,9 @@
 }
 
 
+void FlagList::EnforceFlagImplications() {
+#define FLAG_MODE_DEFINE_IMPLICATIONS
+#include "flag-definitions.h"
+}
+
 } }  // namespace v8::internal