diff --git a/compiler/cpp/src/main.cc b/compiler/cpp/src/main.cc
index e0ff21f..4362029 100644
--- a/compiler/cpp/src/main.cc
+++ b/compiler/cpp/src/main.cc
@@ -533,6 +533,8 @@
     st->generate_fingerprint();
   }
 
+  g_type_void->generate_fingerprint();
+
   // If you want to generate fingerprints for implicit structures, start here.
   /*
   const vector<t_service*>& services = program->get_services();