diff --git a/main.go b/main.go
index 05a2a19..2f9463c 100644
--- a/main.go
+++ b/main.go
@@ -198,7 +198,7 @@ func main() {
 				}
 			}()
 		} else {
-			fmt.Printf("Warning: no valid TLS configuration was provided, not binding on %s", config.BindSecure)
+			log.Printf("Warning: no valid TLS configuration was provided, not binding on %s", config.BindSecure)
 		}
 	}