diff --git a/mk/build.mk b/mk/build.mk
index 5e8e8bbd4a..3feebc9108 100644
--- a/mk/build.mk
+++ b/mk/build.mk
@@ -1,5 +1,5 @@
 build-clean:
-	@rm -f $(PREFIX)/bin/*
+	@rm -Rf $(PREFIX)/bin/*
 
 # Cross builder helper
 define gocross