diff --git a/main.go b/main.go
index f6aae4c..e0b6305 100644
--- a/main.go
+++ b/main.go
@@ -60,6 +60,8 @@ func init() {
 	if err != nil {
 		log.Fatalf("couldn't parse HTML templates: %v", err)
 	}
+
+	refreshRunning = &sync.Mutex{}
 }
 
 func main() {