diff --git a/examples/simple/main.go b/examples/simple/main.go
index e2c0310..1d82e74 100644
--- a/examples/simple/main.go
+++ b/examples/simple/main.go
@@ -18,7 +18,7 @@ import (
 	"flag"
 	"log"
 	"net/http"
-	
+
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )