diff --git a/repbuild/src/main.rs b/repbuild/src/main.rs
index fadaa6047..19f2d3810 100644
--- a/repbuild/src/main.rs
+++ b/repbuild/src/main.rs
@@ -407,8 +407,7 @@ fn run(release: bool, target: Target, do_accel: bool) -> Result<(), Error> {
                 "-parallel", "none",
                 "-monitor", "none",
                 "-machine", accel,
-                "-cpu", "max",                "-serial", "stdio",
-
+                "-cpu", "max",
                 "-device", "isa-debug-exit,iobase=0xf4,iosize=0x04",
             ]);
         }