diff --git a/Debug/debug_types.h b/Debug/debug_types.h
index 0d9c209a6..8be6350c1 100644
--- a/Debug/debug_types.h
+++ b/Debug/debug_types.h
@@ -17,7 +17,8 @@ typedef enum {
     FG_AIRCRAFT  = 0x00000400,
     FG_AUTOPILOT = 0x00000800,
     FG_SERIAL    = 0x00001000,
-    FG_UNDEFD    = 0x00002000, // For range checking
+    FG_CLIPPER   = 0x00002000,
+    FG_UNDEFD    = 0x00004000, // For range checking
 
     FG_ALL     = 0xFFFFFFFF
 } fgDebugClass;