diff --git a/Makefile b/Makefile
index ad8a97f29e1a2deb7e8a09a12c345c9ca1e03cc5..efbc3b89b935e48e70154b774a9e13956673084c 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,7 @@ check: export image ?= tests
 check: all
 	./scripts/test.py
 
-osv.vmdk osv.vdi:
+osv.vmdk osv.vdi: all
 	$(MAKE) -r -C $(dir $(submake)) $@
 .PHONY: osv.vmdk osv.vdi