diff --git a/Makefile b/Makefile
index 02c1f06..2d44646 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,10 @@ VERSION = $(shell git describe --tags)
 all: plugin
 
 plugin:
-	GO111MODULE="off" go build -v -x -buildmode=plugin -o ../andlabs.so
+	GO111MODULE=off go build -v -x -buildmode=plugin -o andlabs.so
 
 install:
+	rm -f andlabs.so
 	go build -buildmode=plugin -o ~/go/lib/andlabs-${VERSION}.so
 
 goget: