diff --git a/arch/sim/src/sim/sim_usbhost.c b/arch/sim/src/sim/sim_usbhost.c
index be69b12f4c5..65931cd7632 100644
--- a/arch/sim/src/sim/sim_usbhost.c
+++ b/arch/sim/src/sim/sim_usbhost.c
@@ -569,7 +569,7 @@ static int sim_usbhost_ctrlin(struct usbhost_driver_s *drvr,
   nxsem_wait(&ep0info->iocsem);
   nxsem_destroy(&ep0info->iocsem);
 
-  return ep0info->xfrd;
+  return ep0info->xfrd < 0 ? ep0info->xfrd : OK;
 }
 
 /****************************************************************************