diff --git a/src/saveload/saveload.cpp b/src/saveload/saveload.cpp
index dd34a7dea1..a0e0c76123 100644
--- a/src/saveload/saveload.cpp
+++ b/src/saveload/saveload.cpp
@@ -2772,7 +2772,7 @@ static SaveOrLoadResult SaveFileToDisk(bool threaded)
 		const SaveLoadFormat *fmt = GetSavegameFormat(_savegame_format, &compression);
 
 		/* We have written our stuff to memory, now write it to file! */
-		uint32 hdr[2] = { fmt->tag, TO_BE32((SAVEGAME_VERSION | SAVEGAME_VERSION_EXT) << 16) };
+		uint32 hdr[2] = { fmt->tag, TO_BE32((uint32) (SAVEGAME_VERSION | SAVEGAME_VERSION_EXT) << 16) };
 		_sl.sf->Write((byte*)hdr, sizeof(hdr));
 
 		_sl.sf = fmt->init_write(_sl.sf, compression);