diff --git a/src/openrct2-ui/UiContext.cpp b/src/openrct2-ui/UiContext.cpp
index 17e84abfc8..b061cbb17b 100644
--- a/src/openrct2-ui/UiContext.cpp
+++ b/src/openrct2-ui/UiContext.cpp
@@ -640,7 +640,8 @@ public:
         _platformUiContext->ShowMessageBox(_window, message);
     }
 
-    int ShowMessageBox(const std::string& title, const std::string& message, const std::vector<std::string>& options) override
+    int32_t ShowMessageBox(
+        const std::string& title, const std::string& message, const std::vector<std::string>& options) override
     {
         auto message_box_button_data = std::make_unique<SDL_MessageBoxButtonData[]>(options.size());
         for (size_t i = 0; i < options.size(); i++)
diff --git a/src/openrct2/park/ParkFile.cpp b/src/openrct2/park/ParkFile.cpp
index f2506b32d9..85769403da 100644
--- a/src/openrct2/park/ParkFile.cpp
+++ b/src/openrct2/park/ParkFile.cpp
@@ -2331,7 +2331,7 @@ int32_t scenario_save(u8string_view path, int32_t flags)
         std::string report_bug_button = "Report bug, trigger an assert";
         std::string skip_button = "Skip reporting, let me continue";
 
-        std::vector<std::string> buttons{ report_bug_button, skip_button };
+        std::vector<std::string> buttons{ std::move(report_bug_button), std::move(skip_button) };
         int choice = uictx->ShowMessageBox(title, message, buttons);
 
         if (choice == 0)
diff --git a/src/openrct2/ui/DummyUiContext.cpp b/src/openrct2/ui/DummyUiContext.cpp
index 77aa929b4e..d4040832e6 100644
--- a/src/openrct2/ui/DummyUiContext.cpp
+++ b/src/openrct2/ui/DummyUiContext.cpp
@@ -90,9 +90,9 @@ namespace OpenRCT2::Ui
         void ShowMessageBox(const std::string& /*message*/) override
         {
         }
-        int ShowMessageBox(const std::string&, const std::string&, const std::vector<std::string>&) override
+        int32_t ShowMessageBox(const std::string&, const std::string&, const std::vector<std::string>&) override
         {
-            return 0;
+            return -1;
         }
         bool HasMenuSupport() override
         {
diff --git a/src/openrct2/ui/UiContext.h b/src/openrct2/ui/UiContext.h
index cac084e8da..142b79d874 100644
--- a/src/openrct2/ui/UiContext.h
+++ b/src/openrct2/ui/UiContext.h
@@ -120,7 +120,7 @@ namespace OpenRCT2
             virtual void TriggerResize() abstract;
 
             virtual void ShowMessageBox(const std::string& message) abstract;
-            virtual int ShowMessageBox(
+            virtual int32_t ShowMessageBox(
                 const std::string& title, const std::string& message, const std::vector<std::string>& options) abstract;
 
             virtual bool HasMenuSupport() abstract;