diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 0cdea0c4487888058bf6aaf1d0d0d51bf1b0aa0b..4c13f0b2c56567ce8eb45346c9bdd00ca0b50cd5 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -1,6 +1,6 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-#define THISFIRMWARE "ArduCopter V2.6 Gamma"
+#define THISFIRMWARE "ArduCopter V2.6 Delta"
 /*
 ArduCopter Version 2.5
 Lead author:	Jason Short