diff --git a/vhdlpp/subprogram_emit.cc b/vhdlpp/subprogram_emit.cc
index 0b6f27f11..0a38c58f2 100644
--- a/vhdlpp/subprogram_emit.cc
+++ b/vhdlpp/subprogram_emit.cc
@@ -45,7 +45,7 @@ int SubprogramBody::emit_package(ostream&fd) const
           if(const Expression*init = var->peek_init_expr()) {
               fd << cur->first << " = ";
               init->emit(fd, NULL, NULL);
-              fd << "; -- automatic function emulation" << endl;
+              fd << "; // automatic function emulation" << endl;
           }
       }