diff --git a/include/grgsm/misc_utils/message_printer.h b/include/grgsm/misc_utils/message_printer.h
index d40352f..04aae94 100644
--- a/include/grgsm/misc_utils/message_printer.h
+++ b/include/grgsm/misc_utils/message_printer.h
@@ -48,7 +48,8 @@
        * class. gsm::message_printer::make is the public interface for
        * creating new instances.
        */
-      static sptr make(pmt::pmt_t prepend_string, bool print_gsmtap_header=false);
+      static sptr make(pmt::pmt_t prepend_string, bool prepend_fnr=false,
+        bool prepend_frame_count=false, bool print_gsmtap_header=false);
     };
 
   } // namespace gsm