diff --git a/OneWire.h b/OneWire.h
index 961f7ec..a7bfab7 100644
--- a/OneWire.h
+++ b/OneWire.h
@@ -69,6 +69,7 @@ class OneWire
 #endif
 
   public:
+    OneWire() { }
     OneWire(uint8_t pin) { begin(pin); }
     void begin(uint8_t pin);