diff --git a/build.sh b/build.sh
index f024f63e..35b56a12 100755
--- a/build.sh
+++ b/build.sh
@@ -6,6 +6,6 @@ then
     echo "Successfully connected to Google, no need to use Go proxy"
 else
     echo "Google is blocked, Go proxy is enabled: GOPROXY=https://goproxy.cn,direct"
-    GO_PROXY_SETTING=$(GOPROXY=https://goproxy.cn,direct)
+    export GOPROXY="https://goproxy.cn,direct"
 fi
-CGO_ENABLED=0 GOOS=linux GOARCH=amd64 $GO_PROXY_SETTING go build -ldflags="-w -s" -o server .
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-w -s" -o server .