diff --git a/g10/parse-packet.c b/g10/parse-packet.c
index 9a733b521..86c2be4ad 100644
--- a/g10/parse-packet.c
+++ b/g10/parse-packet.c
@@ -220,7 +220,7 @@ set_packet_list_mode (int mode)
       else
         listfp = es_stderr;
 
-      if (opt.debug && DBG_MPI_VALUE)
+      if (opt.debug & DBG_MPI_VALUE)
         mpi_print_mode = 1;
     }
   return old;