diff --git a/lib/make/mb_openmsx.mk b/lib/make/mb_openmsx.mk
index e97396b..294f4f1 100644
--- a/lib/make/mb_openmsx.mk
+++ b/lib/make/mb_openmsx.mk
@@ -90,7 +90,7 @@ define _mb_openmsx_run
 		$(if $(filter ram4mb,$(3)),-ext ram2mb) \
 		$(if $(filter ram4mb,$(3)),-ext ram4mb) \
 		$(MB_OPENMSX_ARGS) \
-		-control stdio < $(1)-omsx/stdio.xml $(if $(filter on,$(MB_OPENMSX_STDOUT_NULL)),> /dev/null)
+		-control stdio < $(1)-omsx/stdio.xml $(if $(filter on,$(MB_OPENMSX_STDOUT_NULL)),$(MB_OS_ERRIGNORE) >/dev/null)
 	rsync --checksum --recursive "$(1)-omsx/persistent/fire-hdd/untitled1/sync/" "$(1)/"
 endef