diff --git a/proxy/grpc/grpc.go b/proxy/grpc/grpc.go
index 0caea36a..e8a28877 100644
--- a/proxy/grpc/grpc.go
+++ b/proxy/grpc/grpc.go
@@ -137,7 +137,7 @@ func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server
 }
 
 func (p *Proxy) String() string {
-        return "grpc"
+	return "grpc"
 }
 
 // NewProxy returns a new grpc proxy server
diff --git a/proxy/http/http.go b/proxy/http/http.go
index d01bf038..dd666763 100644
--- a/proxy/http/http.go
+++ b/proxy/http/http.go
@@ -189,7 +189,7 @@ func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server
 }
 
 func (p *Proxy) String() string {
-        return "http"
+	return "http"
 }
 
 // NewSingleHostProxy returns a router which sends requests to a single http backend