diff --git a/src/openrct2-ui/windows/TextInput.cpp b/src/openrct2-ui/windows/TextInput.cpp
index fa401ad79b..956252064c 100644
--- a/src/openrct2-ui/windows/TextInput.cpp
+++ b/src/openrct2-ui/windows/TextInput.cpp
@@ -53,7 +53,7 @@ private:
 
     int32_t _cursorBlink{};
     size_t _maxInputLength{};
-    std::string _buffer;
+    std::vector<utf8> _buffer;
 
 public:
     void OnOpen() override
@@ -105,7 +105,8 @@ public:
 
     void SetText(std::string_view text, size_t maxLength)
     {
-        _buffer = String::UTF8Truncate(text, maxLength);
+        _buffer.resize(maxLength);
+        safe_strcpy(_buffer.data(), std::string(text).c_str(), maxLength);
         _maxInputLength = maxLength;
         gTextInput = context_start_text_input(_buffer.data(), maxLength);
     }
@@ -215,7 +216,7 @@ public:
         screenCoords.y += 25;
 
         char wrapped_string[TEXT_INPUT_SIZE];
-        safe_strcpy(wrapped_string, _buffer.data(), TEXT_INPUT_SIZE);
+        safe_strcpy(wrapped_string, _buffer.data(), _buffer.size());
 
         // String length needs to add 12 either side of box
         // +13 for cursor when max length.