diff --git a/lib/make/msxbuild.mk b/lib/make/msxbuild.mk
index fca5cec..b42cb1f 100644
--- a/lib/make/msxbuild.mk
+++ b/lib/make/msxbuild.mk
@@ -72,7 +72,7 @@ endef
 define mb_create_flight_video
 	@echo === Indexing flight videos
 	ls -1tr $(1)/*-omsx/videos/*.avi | awk -F "$(1)/" -v s="file '" -v e="'" '{print s$$2e}' > $(1)/$(MB_FLIGHT_VIDEO_NAME).lst
-	ffmpeg -v quiet -y -f concat -i $(1)/$(MB_FLIGHT_VIDEO_NAME)lst -c copy $(1)/$(MB_FLIGHT_VIDEO_NAME).avi
+	ffmpeg -v quiet -y -f concat -i $(1)/$(MB_FLIGHT_VIDEO_NAME).lst -c copy $(1)/$(MB_FLIGHT_VIDEO_NAME).avi
 	@echo === Flight video completed
 endef