1 files changed, 2 insertions, 2 deletions
diff --git a/src/support/command-line.h b/src/support/command-line.h
index 14dbce57f..6e0af846e 100644
--- a/src/support/command-line.h
+++ b/src/support/command-line.h
@@ -35,9 +35,9 @@ namespace wasm {
 class Options {
  public:
   typedef std::function<void(Options *, const std::string &)> Action;
-  enum class Arguments { Zero, One, N };
+  enum class Arguments { Zero, One, N, Optional };
 
-  bool debug;
+  int debug;
   std::map<std::string, std::string> extra;
 
   Options(const std::string &command, const std::string &description);