diff --git a/tool/viz/bd.c b/tool/viz/bd.c
index f2560e6f7..e2bffd13e 100644
--- a/tool/viz/bd.c
+++ b/tool/viz/bd.c
@@ -77,6 +77,6 @@ int main(int argc, char *argv[]) {
     }
     o += n;
   }
-  if (o) printf("%08x\n", o, A, B);
+  if (o) printf("%08x\n", o);
   return !feof(f);
 }