diff --git a/mirko.go b/mirko.go
index 90959ae..b40f27a 100644
--- a/mirko.go
+++ b/mirko.go
@@ -25,7 +25,7 @@
 func init() {
 	flag.StringVar(&flagListenAddress, "listen_address", "127.0.0.1:4200", "gRPC listen address")
 	flag.StringVar(&flagDebugAddress, "debug_address", "127.0.0.1:4201", "HTTP debug/status listen address")
-	flag.StringVar(&flagDebugAllowAll, "debug_allow_all", false, "HTTP debug/status available to everyone")
+	flag.BoolVar(&flagDebugAllowAll, "debug_allow_all", false, "HTTP debug/status available to everyone")
 	flag.Set("logtostderr", "true")
 }