diff --git a/clang/utils/TableGen/TableGenBackends.h b/clang/utils/TableGen/TableGenBackends.h
index f74a6fbdc62295..cae90a7dfa0784 100644
--- a/clang/utils/TableGen/TableGenBackends.h
+++ b/clang/utils/TableGen/TableGenBackends.h
@@ -29,7 +29,7 @@ namespace clang {
 // or
 // `#pragma clang riscv intrinsic thead_vector` for RVV 0.7.1 (the
 // `XTHEADV_VECTOR`).
-enum RVVHeaderType : uint8_t { RVV, XTHEADV_VECTOR };
+enum RVVHeaderType { RVV, XTHEADV_VECTOR };
 
 void EmitClangDeclContext(llvm::RecordKeeper &RK, llvm::raw_ostream &OS);
 void EmitClangASTNodes(llvm::RecordKeeper &RK, llvm::raw_ostream &OS,