diff --git a/examples/util/print_key_press.cpp b/examples/util/print_key_press.cpp
index ccb34a3e..fa32ee79 100644
--- a/examples/util/print_key_press.cpp
+++ b/examples/util/print_key_press.cpp
@@ -17,7 +17,7 @@ class DrawKey : public Component {
     for (size_t i = std::max(0, (int)keys.size() - 10); i < keys.size(); ++i) {
       std::wstring code;
       for(auto& it : keys[i].input())
-        code += L" " + std::to_wstring((int)it);
+        code += L" " + std::to_wstring((unsigned int)it);
 
       code = L"(" + code + L" ) -> " + keys[i].character() + L")";
       children.push_back(text(code));
diff --git a/src/ftxui/component/event.cpp b/src/ftxui/component/event.cpp
index 4b3faac3..e87eb9fe 100644
--- a/src/ftxui/component/event.cpp
+++ b/src/ftxui/component/event.cpp
@@ -128,7 +128,7 @@ Event Event::GetEvent(std::function<char()> getchar) {
       return ParseESC(getchar, input);
   }
 
-  if (input[0] < 32)  // C0
+  if (input[0] >= 0 && input[0] < 32)  // C0
     return Event::Special(input);
 
   return ParseUTF8(getchar, input);