diff --git a/src/openrct2/ParkFile.cpp b/src/openrct2/ParkFile.cpp
index efc497e45a..cd5d636812 100644
--- a/src/openrct2/ParkFile.cpp
+++ b/src/openrct2/ParkFile.cpp
@@ -866,7 +866,7 @@ int32_t scenario_save(const utf8* path, int32_t flags)
 class ParkFileImporter : public IParkImporter
 {
 private:
-    const IObjectRepository& _objectRepository;
+    [[maybe_unused]] const IObjectRepository& _objectRepository;
     std::unique_ptr<OpenRCT2::ParkFile> _parkFile;
 
 public:
diff --git a/src/openrct2/core/OrcaStream.hpp b/src/openrct2/core/OrcaStream.hpp
index 9528a753c3..3ccd47fd53 100644
--- a/src/openrct2/core/OrcaStream.hpp
+++ b/src/openrct2/core/OrcaStream.hpp
@@ -11,6 +11,7 @@
 
 #include "Crypt.h"
 
+#include <algorithm>
 #include <array>
 #include <cstdint>
 #include <fstream>