diff --git a/cwMidiDevice.h b/cwMidiDevice.h
index 7461356..6c8b16d 100644
--- a/cwMidiDevice.h
+++ b/cwMidiDevice.h
@@ -1,5 +1,5 @@
-#ifndef cwMidiPort_H
-#define cwMidiPort_H
+#ifndef cwMidiDevice_H
+#define cwMidiDevice_H
 
 
 namespace cw