diff --git a/lib/cpp/test/DebugProtoTest.cpp b/lib/cpp/test/DebugProtoTest.cpp
index ed23d1a..4f456f3 100644
--- a/lib/cpp/test/DebugProtoTest.cpp
+++ b/lib/cpp/test/DebugProtoTest.cpp
@@ -31,7 +31,7 @@
   OneOfEach ooe;
   ooe.im_true   = true;
   ooe.im_false  = false;
-  ooe.a_bite    = 0xd6;
+  ooe.a_bite    = 0x7f;
   ooe.integer16 = 27000;
   ooe.integer32 = 1<<24;
   ooe.integer64 = (uint64_t)6000 * 1000 * 1000;