diff --git a/compiler/dex/compiler_enums.h b/compiler/dex/compiler_enums.h
index 17b5bb5..05ca1b5 100644
--- a/compiler/dex/compiler_enums.h
+++ b/compiler/dex/compiler_enums.h
@@ -55,6 +55,7 @@
 };
 
 enum BBType {
+  kNullBlock,
   kEntryBlock,
   kDalvikByteCode,
   kExitBlock,